Chlorine in a solution of water at high levels found in swimming pools could cause allergic reactions and some individuals may experience skin irritation, sore throat and stinging eyes. The reason is that the pH level of water is too high or too low. I was asking this because I am a regular swimmer and I find that all the spools here have a v high chlorine level, as opposed to some in the UK. I wasn’t kidding and I would highly recommend you to make a bit of an effort and to educate yourself before you reply or you make any smartass comment.