I don't get it the other way around - why do people freak out about it? I don't care one way or the other whatever or not people piss in the pool next to me - its like somebody splashing you with water in the middle of a rainstorm.
So does pretty much everything related to your body, including the stuff usually present on your skin, the outside of your eyes, and the inside of your nose, throat, and lungs.
Which is part of why chlorine itself is noted to be “irritating to the nose, throat, and lungs” and “[a] severe irritant of the eyes”, without any qualifications of “if first combined with urine.” [0]
And why, when chlorine was used as a chemical weapon in warfare, it wasn't as a chlorine-urine binary agent.
[0] https://www.cleartech.ca/ckfinder/userfiles/files/MSDS/Chlor...