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Fun fact of the day: The smell at the pool is not the smell of chlorine. It is the smell of the chemicals produced when chlorine reacts with urine. It is the smell of chloromines, which is the result of chlorine interacting with ammonia, which is in large quantities in urine.

@freemo chlorine dioxide does however smell pretty bad :blobcatsneeze:

@icedquinn pure chlorine is pretty bad too.. i actually like pool smell though.

@icedquinn pure chlorine also can kill ya easily enough :) Usually bad smells are an indication of danger

@freemo And that new chemical is an explosive apparently.

@freemo As someone who briefly had a job maintaining pools, I don't believe this. Do you have a citation?

@Albright Not off hand, it is a well known fact I've heard repeated from many reliable sources. I've also been around chlorine enough to recognize it is a different smell.

With that said a quick google search produces several good sources confirming what I said.

Here is a good video on it by mark rover where he does the experiment to show that pee causes the smell (keep in mind you can find plenty of other sources if you want something more scholarly):

youtu.be/S32y9aYEzzo

@Albright Skip to 4:11 if you want to see the part where they discuss how urine causes the pool smell, proper PhD making the claim too who is pretty much an expert on the topic.

@freemo Sweat also contains ammonia.

Do you know how fast the reaction is? Would one typically expect most of ammonia to leave the pool by evaporation or by this reaction?

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