burn you , they actually used chlorine gas in ww2 to kill, they used to GAS them.and it would make your lungs bleed,from the inside. and it is also a salt : sodium chloride. and it isn't that safe to drink dunno why... but it will kill all the bacteria, good and bad. and if you keep it too long in your hair they will turn white.
written by Sciencefreak
It will burn your skin and eyes, and if left high for too long, will eat away the layers of the pool lining.