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  • SunflowerGal
    SunflowerGal 3 жыл бұрын +28055

    The amount of times I accidentally swallowed pool water 😣

  • Brooop Bib 2
    Brooop Bib 2  Жыл бұрын +3005

    There’s actually a much easier way:
    1) Block off your pool to the outside so you can only access it from your house
    2) Don’t let anyone in your house
    3) Don’t pee in your pool
    If you follow all these steps, you will know exactly how much pee is in your pool.

    • Kylie Backhouse
      Kylie Backhouse 2 күн бұрын


    • Fran de rosa
      Fran de rosa 27 күн бұрын

      Well what about the people that lived there before unless you just got the pool there while you where there or you where the first person to live there

    • RADIS370 370
      RADIS370 370 2 ай бұрын

      4)Drain your pool and wash it
      5)Fill the pool up again

    • mega gatling pea
      mega gatling pea 3 ай бұрын


    • ZeroXD
      ZeroXD 3 ай бұрын

      Sep 1 is to get money for pool...

  • Brit Lew
    Brit Lew  Жыл бұрын +2591

    When I was on a cruise some years ago, I sat by the pool bar having drinks.
    After several hours it dawned on me that nobody in the pool ever got out even though they were having drinks nonstop...

    • mega gatling pea
      mega gatling pea 3 ай бұрын

      oh hellna

    • Bumbiedore
      Bumbiedore 3 ай бұрын +1

      @Brit Lew Hey I went to a pool that had a bar serving drinks in the middle of the pool once at a resort in Cuba.

    • Brit Lew
      Brit Lew 3 ай бұрын

      @Breakfast Television i was at the Pool Bar, not in the Pool 😁

    • Breakfast Television
      Breakfast Television 3 ай бұрын

      Did you get out at all ?

    • Heather Duke
      Heather Duke 3 ай бұрын


  • SodaPortal
    SodaPortal 10 ай бұрын +210

    Mark, could you revisit this considering the nitrogen content in proteins such as hair and skin that could form trichloramine that would give the smell too?

    • SodaPortal
      SodaPortal 2 ай бұрын

      @Dries Jansen i feel like it could be a little bit naive to say that no trichloramine at all would form, since in many pools the water still runs through the filter until it is changed

    • Dries Jansen
      Dries Jansen 2 ай бұрын

      but the sweat for example does dissolve in the chlorine so that will also be part of the smell

    • Dries Jansen
      Dries Jansen 2 ай бұрын +1

      hair and skin won't really break down in the pool water (it gets filtered out eventually), so the chlorine would not have acces to the nitrogen so no trichloramine forms from hair and skin.

    • FluffyDreg
      FluffyDreg 4 ай бұрын +7

      If that was the basis they were using for their results, sure. But they weren't. The Trichloramine was just a "funfact" not what they were using to determine their numbers.
      The numbers came strictly from the artificial sweeteners they found.

  • M4G4 Trickz
    M4G4 Trickz 2 жыл бұрын +4817

    You know she’s a genius when she’s teaching MARK ROBER things lol

  • Daybreak
    Daybreak  Жыл бұрын +42

    Love seeing mark taken back by his discoveries 😂

  • soda
    soda 3 жыл бұрын +14294

    jokes on them I go to random pools and pour in packets of artificial sweetener

    • Jayce Lobb
      Jayce Lobb 2 күн бұрын

      I once forgot 100 packets of sweetener in my pocket

    • Thefishylover
      Thefishylover 16 күн бұрын

      @Maojie Yan oof

    • Cole Slaw
      Cole Slaw 2 ай бұрын


    • STEALTHY25
      STEALTHY25 2 ай бұрын

      Some men just want to watch the world burn…

    • william & annie
      william & annie 2 ай бұрын

      I wonder how they feel about that

  • Issa Harb
    Issa Harb  Жыл бұрын +765

    Can you imagine how awkward it was for him to walk around the airport with about 6 bottles of different types of pool water 😂

  • Supertoys Supertoys
    Supertoys Supertoys  Жыл бұрын +4128

    Lol who knew the smell of pool that nostalgia is actually a pee nostalgia 😵

    • SaucePussy
      SaucePussy 5 ай бұрын

      Wellcome to the club

    • what will go wrong
      what will go wrong 8 ай бұрын


    • Dylan Santos
      Dylan Santos 11 ай бұрын

      @David Hsu He was just telling the truth. Don’t be rude

    • Limeade
      Limeade  Жыл бұрын

      I’m a swimmer, and now in kinda disgusted

    • Kakarla Narendra Varma
      Kakarla Narendra Varma  Жыл бұрын


  • machin truc
    machin truc 3 ай бұрын +78

    5:50 that’s cool ! That means no one pied in my families pool when I was a kid. We added everything needed, but it never smelled like public pool, I always wondered why. Now I have the answer 😁

  • kjk29
    kjk29 2 жыл бұрын +2899

    This is one of those "ignorance is bliss" moments

    • Ilse Ruys
      Ilse Ruys 5 ай бұрын

      At least now we can start stopping with peeing in the pool

    • Lizhi Jiang
      Lizhi Jiang 9 ай бұрын


    • LeSkip Bayless
      LeSkip Bayless 9 ай бұрын

      @CursedJade Have you never swam before? Sometimes water goes in your mouth and you accidentally swallow it.

    • CursedJade
      CursedJade 9 ай бұрын

      @LeSkip Bayless why would you drink pool water

    • Caroline Baldwin
      Caroline Baldwin 10 ай бұрын

      Uhhhh Im going to wipe this from my brain, and go pe in a pool

  • PePaPu
    PePaPu  Жыл бұрын +90

    Thank you, never was a fan of pools or swimming, now this has cleared up any of my doubts of whether I should go into the water ever again.

  • WCGwkf
    WCGwkf 4 жыл бұрын +4289

    The fact that the pool smell is caused from pee is never going to leave my mind

    • Big Fam 7
      Big Fam 7 2 ай бұрын +1

      @Zachary Abner same lol

    • GalixyPawerPack
      GalixyPawerPack 3 ай бұрын

      Y e s

    • goophr
      goophr 6 ай бұрын +1

      I regret reading the comments before I watched the video

    • thalegak
      thalegak 6 ай бұрын


    • lala nana
      lala nana 7 ай бұрын


    BATGSXR  Жыл бұрын +170

    I wish you would have also consulted a certified pool cleaner as well. The reason your results were skewed was because you pulled from the top layer of water. In order to properly test a pool you need to get samples from 18" deep. The water may not have been changed recently but they could have filled it or it could have rained. In order to get rid of that smell is... wait for it... more chlorine. Would love to see this again with say Scott Ford there would be so much more useful information about pools too. Anyway love your work.

    • aksmex
      aksmex 9 ай бұрын +4

      I used to go to a pool and the water was constantly being filtered in and out, Idk if that is the case for all pools.

    • Rory Weeding
      Rory Weeding 11 ай бұрын +7

      Gotta hit that break point chlorination

  • bigstackD Casting
    bigstackD Casting  Жыл бұрын +1084

    Well that was certainly interesting 🤔 👊🏻😁🍻

  • Ninjablox
    Ninjablox 7 ай бұрын +3

    I love your channel. You educate us well keeping it simple and entertaining!

  • Bryce Ferguson
    Bryce Ferguson  Жыл бұрын +251

    Could that "pool smell" also be caused by sweat? The reason they couldn't test the amount of urine is because sweat has the same chemical makeup. Wouldn't that lead to the same conclusion that sweat also reacts in the same way with the chlorine as urine?

    • Bet Justin Bieber & Celine Dion regret being poked
      Bet Justin Bieber & Celine Dion regret being poked 4 ай бұрын +2

      Nitrogen trichloride, also known as trichloramine, is the chemical compound with the formula NCl₃. This yellow, oily, pungent-smelling and explosive liquid is most commonly encountered as a byproduct of chemical reactions between ammonia-derivatives and chlorine.
      Yes it is from sweat and urine reacting with chlorine

    • Ysh
      Ysh 6 ай бұрын

      Keep hoping dude

    • Ihavenoidea
      Ihavenoidea 9 ай бұрын

      @emy thats the most non-scientific answer I've ever seen. Probably true, but you just said it without knowing lmao

    • Ej White
      Ej White 10 ай бұрын

      @Antoine Dns C CD. B b. B b

  • C W
    C W 10 ай бұрын +11

    Admire the commitment from Mark here. A lot of peeing he had to do to fill 13 gallons for demonstration.

  • Santi Ago
    Santi Ago 3 жыл бұрын +10282

    Is no one gonna talk about how many connections this guy has

  • Lalito :D
    Lalito :D  Жыл бұрын +515

    Gotta love how mark acts like he knows what’s going on while at the lab

    • The Office Clips
      The Office Clips 11 ай бұрын

      Stealth Nution? What's that?

    • Monke donkey 2
      Monke donkey 2 11 ай бұрын


    • Michel Anzolin
      Michel Anzolin  Жыл бұрын

      @Deltakryzz Ain’t it ironic how you told them to edit their comment meanwhile you also edited your comment?

    • Inayat Rasool
      Inayat Rasool  Жыл бұрын +2

      Ofcourse he knows all the stuff.
      I am still in engineering school and I know all of that.
      Mark has completed engineering and he was in fricking nasa.
      Ofcourse he knows about that stuff.

    • HonestlyEthan
      HonestlyEthan  Жыл бұрын +1

      He does he lagit helped design Mars rovers

  • Philipp Meier
    Philipp Meier  Жыл бұрын +154

    I can never swim in a pool again. Thanks Mark.

  • Brothers Fallon
    Brothers Fallon 11 ай бұрын +12

    I love how she has an ingenious method and a full lab to measure pea in pools

  • MouthMuffler
    MouthMuffler 2 жыл бұрын +618

    I’m still waiting for the video where he teaches us how to teleport

  • Katie Wennerberg
    Katie Wennerberg 10 ай бұрын +3

    Proud to say I have always avoided peeing in pools and don’t recall ever doing so. Did I ever think I’d be watching a video about it? Never. Also why did I watch this when my local waterpark is about to open up for the season

  • S V
    S V 3 жыл бұрын +884

    So when Mark jumped into his friend's pool, he literally covered himself in his friend's urine.

    • Ee urr
      Ee urr 7 ай бұрын +1

      Sounds kinda ga

    • Orcinus1967
      Orcinus1967 2 жыл бұрын +1

      @S V its really gross. Thats why I invented Purine. Filtered, organic, vegan.

    • S V
      S V 2 жыл бұрын

      @Orcinus1967 I know, right!

    • Vxnessa 912
      Vxnessa 912 3 жыл бұрын +1

      I meeeeen

    • K ❤️
      K ❤️ 3 жыл бұрын +1

      And chlorine.

  • radical009
    radical009 2 жыл бұрын +391

    Parents: “don’t pee in the pool!”
    Their right, Mark Rober will catch us some day...

    • Sir Muffin
      Sir Muffin 11 ай бұрын

      @Sevro thr'eey*

    • ☂ Rainy Days ☂
      ☂ Rainy Days ☂  Жыл бұрын

      @Sevro not everyone has perfect grammar. Not everyone comes from an English speaking country. So can you excuse a minor grammatical error just one time. I’m certain if you were to kindly tell them “hey, just a friendly reminder that it’s ‘they’re’ not ‘their’”, they would’ve probably edited the comment to be grammatically correct. No offense by the way.

    • honor
      honor  Жыл бұрын +2

      it's all fun and games until mark pulls up at your house with a mass spectrometer

    • TheFlyingRat
      TheFlyingRat  Жыл бұрын +1


    • THErailfan8
      THErailfan8  Жыл бұрын +1

      @Sevro oof

  • rust
    rust  Жыл бұрын +314

    Theoretically I could compare samples of before and after my sibling gets in the pool to see if they peed

  • Millsstrangerthingsxxx
    Millsstrangerthingsxxx 11 ай бұрын +3

    This has made me never want to swim in a pool ever again, thanks mark!

  • Indu Jain
    Indu Jain  Жыл бұрын +45

    Thank you so so so much Mark for these kinds of ideas where we get to learn so much, which is really beneficial : )

  • g.valdovi
    g.valdovi 7 ай бұрын +4

    This had me crackin up cause I been going to the pool more often than ever this summer. 😆

  • Daddy Dog
    Daddy Dog 3 жыл бұрын +3224

    I used to swim competitively and always thought when we went to a pool that smelled extra strong of chlorine, it must be super clean. 😂🤦‍♂️😢 I'm now ruined for swimming.

    • demonsluger
      demonsluger 3 жыл бұрын

      @Antichrist Imagine if they put the thing that makes the water blue if u pee in an olympic pool xD

    • J N
      J N 3 жыл бұрын

      Could be sweat...
      But still

    • Xxnoptrop
      Xxnoptrop 3 жыл бұрын

      Hey ima competitive swimmer to. Swimmer to swimmer tho- I always thought the same thing

    • Novia Clarita
      Novia Clarita 3 жыл бұрын

      ME TOO!!

    • KEKW
      KEKW 3 жыл бұрын

      @Anna boii how do u swim in your bathtub, must be a large bathtub

  • Kawaii Cute
    Kawaii Cute  Жыл бұрын +17

    Can I just say that I love this channel and it is so educational and I wish I could do these experiments at home but watching him is just as fun

  • Anna Layland
    Anna Layland 2 жыл бұрын +8

    Okay, so if sweat has uria in it, does that mean all it takes for chlorine to smell like a swimming pool is for someone to sweat while in it, and no one has to actually pee in the pool? (I’ve also heard that when you’re in water, specifically warm or hot water, you sweat no matter what, which is why you’re thirsty after a shower, so it seems pretty unavoidable)

  • Koala G. Official
    Koala G. Official 5 ай бұрын +3

    I was always thinking: "why is my swimming pool not smelling like one?" well I am happy about the results lol

  • mohammad khan
    mohammad khan  Жыл бұрын +12

    Mark always makes science easier and fun for me ,Like usually I get bored of science

  • med anis jbara
    med anis jbara  Жыл бұрын +7

    i never had the chance to swim in a swimming pool. and thanks to this video , i totally do not regret it

  • Rock_always_ wins26
    Rock_always_ wins26 3 жыл бұрын +2148

    Him: Explaining science
    Me: how did he get that much pee

  • Geliscon
    Geliscon  Жыл бұрын +42

    I was a pool operator for a few years and I was under the impression that the “pool smell” was caused by both dichloramines (chlorine reacting with sweat) and trichloramines (chlorine reacting with urine). But I don’t know if that’s any better for nostalgia’s sake

    • ParodyMyLife
      ParodyMyLife 3 ай бұрын

      Wow, so you can confirm the pool doesn’t smell like chlorine until it’s been introduced to bodily fluids?

  • NJwastaken
    NJwastaken  Жыл бұрын +91

    2:07 I love how Mark Rober is listening to all that genius nerd stuff and just says “of course” while innocently nodding his head to everything she says lol

  • Cat
    Cat 14 күн бұрын +1

    I can almost smell that pool smell just thinking about it... and now what I know what it is, I don't think I'm ever going in a public pool again..
    Also, as a hot tub owner, the best way to keep people from peeing in it ... don't let people in it.

  • RC Nation
    RC Nation 2 жыл бұрын +8

    No matter how many times you watch the same video that mark has made, it's interesting ever time

    • Poplarino
      Poplarino  Жыл бұрын

      You mean terrifying

  • Sean Forbes
    Sean Forbes 10 ай бұрын +3

    Interested to know how a salt water pool would affect this vs. chlorine.

  • Rory FPV
    Rory FPV 4 жыл бұрын +3089

    Note to Self: If pool smells like chlorine - enjoy swimming in pee water.

  • 3b224eac9
    3b224eac9 2 жыл бұрын +222

    Me after watching: Am I the ONLY one who never pee in the pool. Like, why??? Why would anyone do that? You are practically swimming in your own pee seconds after you finish doing that......

    • Psychology Mix
      Psychology Mix 10 ай бұрын


    • Paul Guy
      Paul Guy 2 жыл бұрын

      Who dosent pee in there pool

    • Hippie Holmes
      Hippie Holmes 2 жыл бұрын

      kak lol
      i think this is what he means by lol

    • one
      one 2 жыл бұрын

      people are arguing about pissing in pools

  • ydenneki
    ydenneki 2 жыл бұрын +163

    This also makes the FRENCH word for "Swimming Pool" make perfect sense ... Piscine ... pronounced 'Piss in' ... one of the very few french words I remember from High School French class 35 years ago.

    • Sir Muffin
      Sir Muffin 11 ай бұрын

      @MrBigRig okay that wasnt bad i'll give you that

    • King boo
      King boo  Жыл бұрын

      As a French guy myself I can confirm this.

    • MrBigRig
      MrBigRig  Жыл бұрын +7

      In Spanish it’s “piscina,” because people love to piscina pool.

    • Rémi
      Rémi  Жыл бұрын +2

      Je confirme 😂

    • B B
      B B  Жыл бұрын +11

      True, but that came from latin, piscis (fishes) > piscina

    IAN FELIPE CARVALHO 4 ай бұрын +4

    Excelente legenda 😃 consegui acompanhar todo o raciocínio do vídeo. Muito obrigado por compartilhar conhecimento.

  • JonatasAdoM
    JonatasAdoM 2 жыл бұрын +287

    Accidentally drops glass of sprite in the pool.
    _"well, guess we have pee in it"_

  • Luis Cardenas
    Luis Cardenas 11 ай бұрын +3

    "we all wondered how much per is in the pool"
    I'ma be honest mark. not once in my life did I ever care to know and if I did I never wanted to know lol. But this is fascinating

  • The Hero
    The Hero 2 жыл бұрын +4128

    Imagine peeing in pool and some random scientist youtuber takes your pee to Canada.

    • Endurnium
      Endurnium  Жыл бұрын


    • stylish
      stylish  Жыл бұрын

      but i am in canada

    • Error_Axolotl
      Error_Axolotl  Жыл бұрын


    • 2KXI
      2KXI  Жыл бұрын +1

      What if you were Canadian?

    • S Thapa
      S Thapa  Жыл бұрын


  • Giovanna
    Giovanna  Жыл бұрын +28

    Mark: asthma is more likely to occur in elite swimmers
    Me, who knows how to swim, is a part of my swim team, and had asthma since birth:
    I’m four medical universes ahead of you

  • moe
    moe  Жыл бұрын +6

    so my only question is what if you just so happen to deal with people who only drink water/avoid artificial sweetener altogether

  • caique cardoso
    caique cardoso  Жыл бұрын +2

    There you go, I’m never getting into a pool again… Thanks Mark

  • Maximillian Radniecki
    Maximillian Radniecki  Жыл бұрын +18

    would have been interesting to test a lake or the ocean as well. Yes, comparing it to the total volume would be difficult and the results would be less than accurate, but even a generalization would be pretty cool to see.

    • Eliza Friday
      Eliza Friday  Жыл бұрын

      I was thinking the same thing :)

  • Yuvraj Baishya
    Yuvraj Baishya 11 ай бұрын +3

    "We gonna check the amount of artificial sweetener"
    That one friend who was having vanilla extract in the pool

  • chemical X avier
    chemical X avier 3 жыл бұрын +4133

    I wouldn’t pee in a friends pool. Seems kinda rude.

    • Batdan Neal
      Batdan Neal 2 күн бұрын

      ​@smiit's called the tree in yo best friends backyard lol

    • sylle_a_60
      sylle_a_60 3 күн бұрын


    • Daniel D
      Daniel D 10 күн бұрын

      Paired with that profile pic that comment is perfect😂😂😂

    • Inf Blox
      Inf Blox 12 күн бұрын


    • Archive and ryan
      Archive and ryan 15 күн бұрын


  • desertegle40cal
    desertegle40cal  Жыл бұрын +2

    LOL. I used to tell that to people all the time. If you own a pool company where your state requires you to get a pool operators license like here in Florida you will need to take commercial pool operator courses where they teach you how to test and clean pool water as well as check calcium hardness and PH. One misconception people have is that when you smell that really intense chlorine-type smell from a pool they automatically think there is too much chlorine in the pool when in fact its the exact opposite. When a pool is clean you can barely smell the water if at all. But when there isn’t enough chlorine you smell what we call “Combined Chlorine” which is when the chlorine molecules combine with the dirt and contaminates in the water and create a decay. Thats what your basically smelling. So steer clear of pools with an intense chlorine smell.

  • King Hong
    King Hong 2 жыл бұрын +51

    Long story short, If you have swam in a pool, you basically just swam in strangers' pee, water, and chemicals.

    • King Hong
      King Hong  Жыл бұрын

      @Yes XD

    • Yes
      Yes  Жыл бұрын

      Yeah I totally needed that info

  • Yeah_Sounds Good.
    Yeah_Sounds Good.  Жыл бұрын

    I have never peed in any pool. I just think it's weird how warm it is and how soothing it is..

  • Untellegence
    Untellegence  Жыл бұрын +7

    Thanks Mark! I now don't wanna go swim in any pool ever again.

  • Obito Uzumaki
    Obito Uzumaki 9 ай бұрын

    This guy is teaching things that are on our minds

  • Allen Tac
    Allen Tac 2 жыл бұрын +5754

    Growing up, our friends had a pool. They had a sign: “We don’t swim in your toilet, don’t pee in our pool”.

    • ThyTaco
      ThyTaco 6 ай бұрын


    • CC5052
      CC5052 6 ай бұрын

      Can I use that?

    • Chewdo
      Chewdo 7 ай бұрын

      @Abderrahman Lahiaouni ye

    • Chewdo
      Chewdo 7 ай бұрын


    • Carol Powell
      Carol Powell 7 ай бұрын

      Thats funny

  • Marcelo
    Marcelo 2 жыл бұрын +3

    It would be interesting to conduct a blinded experiment where at least ten participants would smell the two buckets and tell which of them would contain urine? Participants not involved in the experiment are not allowed to stay close (listen, etc). I believe that if the urine/chlorine density would be respected in normal conditions, it would really not be easy to infer the same result presented by you. For these reasons, you may need to increase the number of participants as well :)

  • Marie Nimo
    Marie Nimo  Жыл бұрын +19

    Thanks for taking the time to figure out this USEFUL info 🙏🏼😅💛
    Also, your friend's pool is really nicely designed - lovin the plants along the back length 🌿❤️

  • ladenscarf3406
    ladenscarf3406 7 ай бұрын

    if he was my science teacher i would listen to him all day

  • Light'em Up
    Light'em Up 2 жыл бұрын +12

    Y'all not even prepared for how excited I got when he walked through the doors of the Stollery and announced Lindsay at the University of Alberta. I go to the University of Alberta! And our university has done some really cool stuff so it made me really happy to see him working with the university

  • Puppy
    Puppy 5 ай бұрын

    I love your videos. They really inspire me :D

  • Play Boy Agent
    Play Boy Agent 2 жыл бұрын +1342

    I knew a guy who would use his mouth as a water gun with the pool water in a public apartment pool 💀 I should send him this video

    • na me
      na me  Жыл бұрын

      Saliva and spits are gross too

    • BubbleTeaViolet
      BubbleTeaViolet  Жыл бұрын

      *in a public apartment pool*

    • I like Cheese
      I like Cheese  Жыл бұрын +1

      I did that at primary school 💀💀😭

    • Youdaily
      Youdaily 2 жыл бұрын +1

      Ah RIP

  • Shrey Shah
    Shrey Shah 2 жыл бұрын +394

    Literally smells water with the pee
    Mark: "Hmmmmm smells nostalgic"

    • TacoJK
      TacoJK  Жыл бұрын +1

      @LivBee ..Are you seriously make me gonna do this forever

    • LivBee
      LivBee  Жыл бұрын

      @wce 09 I'm not trolling, I'm curious about what the actual answer is.

    • wce 09
      wce 09  Жыл бұрын +1

      @LivBee you've become the very thing you sought to destroy

    • ⋄ S ⋄
      ⋄ S ⋄  Жыл бұрын

      @LivBee mouth

    • ⋄ S ⋄
      ⋄ S ⋄  Жыл бұрын

      @LivBee mouth

  • Tacticaln't
    Tacticaln't 2 жыл бұрын +52

    “How to measure HOW MUCH PEE IS IN YOUR POOL”
    Now this is the quality content we need

  • Light 32378
    Light 32378 7 ай бұрын

    But what if the pool has a filter system? I mean the pools i go to have drains for excess water that overflows ( due to the displacement of water when someone swims ). The drains are placed throughout the perimeter of the pool. and there is always new water being introduced ( from the a fountain or like tap ish thing at the bottom ), doesn't this make a pool that filters the water to be cleaner? If assuming, the water that is drained is properly treated and then pumped back in.

  • Tap water
    Tap water  Жыл бұрын +20

    As a Canadian, I can confirm that Tom Hortons is just a fast travel teleportation device to the United States.

  • News Today One
    News Today One 6 ай бұрын +1

    Find you a guy that looks at you the way Mark looks at Lindsay

  • TheCelloPanda
    TheCelloPanda 3 жыл бұрын +1154

    Moral of the story: Don't pee in the pool because you'll give people asthma.

    • LeviElevn
      LeviElevn 10 ай бұрын

      * Me Who Has Asthma Naturally …

    • psirvent8
      psirvent8  Жыл бұрын

      1000th like

    • charline joseph
      charline joseph 3 жыл бұрын

      Aʙᴀsᴇᴇɴ ᴋhan • 22 million years ago

    • tanim.
      tanim. 3 жыл бұрын

      So that’s why... fucks sake that little kid in the pool did it all

    • Gacha Molly
      Gacha Molly 3 жыл бұрын

      1000th like!

  • Ari Zeciri
    Ari Zeciri  Жыл бұрын +6

    Do the same on a beach with sea water. That would be also interesting

  • Michael Dunn
    Michael Dunn 2 жыл бұрын

    that is really cool. I was wondering how they were going to figure this out because chlorine literally removes so much or urine as chloramines.

  • Factman American
    Factman American  Жыл бұрын

    Does the same rules apply in a SALT WATER POOL?
    Is there a way to just filter the urine?
    Does an ultra violate light filter remove the pee?
    Thanks in advance. Cheers.

  • ScienceKai
    ScienceKai 6 ай бұрын

    I’m always gonna think twice before saying yes to go to the pool

  • Andrii Povkh
    Andrii Povkh 5 жыл бұрын +23110

    The next question: How much pee is in the ocean?

  • Ahmed N
    Ahmed N  Жыл бұрын +5

    I’m interested in seeing them do a test on a control pool, one that was just filled before anyone got to swim in it, and then compare the artificial sweeteners in that to a used pool. My guess is that some of those artificial sweeteners could also be already in the water (depending on the source) that they used to fill the swimming pool.

    • Lena Graham
      Lena Graham  Жыл бұрын

      he did take two samples from the water source used to fill the pools as a control sample.

    • Ahmed N
      Ahmed N  Жыл бұрын +1

      @Lori McKee
      They seem to take the average sweetener present in urine based on presumably a large sample. It likely doesn’t give the most accurate reading but it gives them a general idea about how much urine is there.

    • Lori McKee
      Lori McKee  Жыл бұрын +2

      I think he mentioned that. What I don’t remember is why artificial sweeteners? Doesn’t the amount of artificial sweetener found in urine vary widely from person to person or even from neighborhood to neighborhood?

  • Prasoon Tiwari
    Prasoon Tiwari 2 жыл бұрын

    Question: How much deep underwater you have to go before you can't pee even if you want to?

  • machin truc
    machin truc 3 ай бұрын +18

    There surely were an investigation after this video in the family owning this pool, to determine who was guilty 😆

  • GlassHalfFull
    GlassHalfFull  Жыл бұрын +76

    After watching this, more people are regretting drinking from the pool than peeing in the pool.

    • Aaron M.
      Aaron M.  Жыл бұрын +1

      Who drinks from a pool?

    • HoweyYa Doing
      HoweyYa Doing  Жыл бұрын +2

      @This is Supposed to be Anonymous it means that people won’t try to stop if everyone else does it

    • This is Supposed to be Anonymous
      This is Supposed to be Anonymous  Жыл бұрын +7

      That is an experiment on its own. It shows people only care about themselves.

  • Mason Graham
    Mason Graham  Жыл бұрын

    Does it matter where you get the water from? Top or bottom of the pool? Does that make a difference?

  • I need sleep
    I need sleep 2 жыл бұрын +1932

    I used to think:
    The stronger the chlorine smells, the cleaner the pool is cause there's more chlorine in the mixture...
    I'll try my best to forget about this vid when I swim in the future, thanks.

    • product recall
      product recall 9 ай бұрын

      Same !!! Lol I'd always be like "mmm I love the smell of a pool! It smells sooo clean!!" Lmfao I'm sooo grossed out. Esp at the YMCA you walk in the door and you get hit with that "pool smell" isntantly!!!! So gross. I'm so grossed out!!!!!!

    • A E
      A E  Жыл бұрын

      Now chlorine dioxide (CLO2) smells immediately like that distinctive pool smell without pee. We use it to clean with. It is a gas. It can be stabilized for a few hours in water. Anyways this has that same smell. Maybe some pools use this along side chlorine like the water departments use during boil orders to clean with. Just saying maybe not all is from pee in pools

    • oni zuka
      oni zuka 2 жыл бұрын


    • NicEXE303
      NicEXE303 2 жыл бұрын

      SAME THO

    • Grace A. Wong
      Grace A. Wong 2 жыл бұрын

      Same, EVERY pool ive been to smells my chlorine
      o god

  • Allan Of El Salvador
    Allan Of El Salvador 2 жыл бұрын

    I always had a suspicion that the "pool smell" had a little bit of piss in it, just a little bit. Must've been the humidity of indoor pools that made me think so.

  • Tommaso Cassara'
    Tommaso Cassara'  Жыл бұрын +1

    Thanks to you now I'm gonna bring my portable inflatable pool
    with me to the pool and, once again, thanks science for ruining but also improving my life.
    and also thanks to you Mark, you are suck a nice person, everyone should be like you!

    CCABP 11 ай бұрын +2

    Plastic bottle: You’re gonna reuse me?
    Mark Rober: …Yes, but you won’t wanna know how

  • Gautam Goel
    Gautam Goel  Жыл бұрын +21

    I love how everyone knows what 'the pool smell is' lmao

  • Landon
    Landon 10 ай бұрын

    This made me not want to swim in a public pool ever again😂

  • ale
    ale 3 жыл бұрын +3465

    Her: “yes , we have evidence everyone pees in the pool”
    7yo me: 👀

    • Michele Goglio
      Michele Goglio  Жыл бұрын

      30yo me: 👀

    • KayOS Code
      KayOS Code  Жыл бұрын

      @light as a Feather 22 and dont, but I guess I dont care that much?

    • Bangladeshball
      Bangladeshball  Жыл бұрын

      me who never swam or been to a swimming pool: I Am 4 Parallel Universes Ahead of You >:)

    • Hey
      Hey  Жыл бұрын

      @light as a Feather BRUH

    • Vergil
      Vergil 2 жыл бұрын

      I dont remember having a pool or ever going to one

  • Ansh Vora
    Ansh Vora  Жыл бұрын +2

    I actually wanted to ask that does Urea jn sweat have a significant impact in the observations. Because I read that Sweat has about 1% or urea only when compared to Urine (Idk if it's authentic or not)- so I was wondering if such miniscule quantity will have any major impact on the Observations.
    Again i am not sk sure about the figures!!
    Really enjoyed the vdo tho.

  • RayningArt
    RayningArt  Жыл бұрын +50

    That awesome smell of summer, vacation and Great Wolf Lodge... totally ruined. Ew. That's.... ew. Thank you for this educating video!

  • WutADay
    WutADay 10 ай бұрын

    Makes me wanna go into pools even more

  • B H
    B H 2 жыл бұрын +2

    As a former competitive swimmer, I can confirm that it is super common (and basically standard practice) to pee in the pool

    • Prnc ye
      Prnc ye  Жыл бұрын +1

      I agree as a competitive swimmer it really is just standard practice to pee during relays

  • ItsKarl
    ItsKarl 10 ай бұрын

    Samples should perhaps be gathered from different parts of the pool, and from different depths, to see if the concentration of artificial sweeteners is more or less equal.

  • PineapplePenny ._.133
    PineapplePenny ._.133 3 жыл бұрын +1674

    Mark Rober “So in conclusion”
    Me “I’ve drank pee”

  • Melli Mel
    Melli Mel 2 жыл бұрын +1

    This science may help me understand why I had urinary pain. I always suspected it might be the Coke Zeros and diet drinks. Since stopping artificial sweetener, I haven’t had a problem.

  • snivellus
    snivellus  Жыл бұрын +1

    Tbh I learn a lot from his videos. I appreciate your work, keep posting.

  • Paul Victor
    Paul Victor Ай бұрын

    MY brain just thought back to every swim class and hotel pool I've been to that smelled so strongly of clorine. Now it makes sense, every pool with a higher ratio of kids smelled so much stronger...

  • Rory Brown
    Rory Brown  Жыл бұрын +77

    Mark: I need you to help me measure how much p33 is in these samples.
    Lindsay: oh joy

    • hanziez
      hanziez  Жыл бұрын

      @Sohyang World balls

    • Sohyang World
      Sohyang World  Жыл бұрын


    • M
      M  Жыл бұрын +1