R.I.P. Scout26
"Smell that 'chlorine'?" reads a fact sheet released by the coalition last month. "It's not what you think. What you smell are actually chemicals that form when chlorine mixes with pee, poop, sweat, and dirt from swimmers' bodies.… These chemicals — not chlorine — can cause your eyes to get red and sting, make your nose run, and make you cough."
Chlorine reacts with ammonia to make chloramine, or depending on the pH, dichloramine or trichloramine. You may have heard of trichloramine by its other name, nitrogen trichloride (where's the explosion smiley?)