I have asthma, bronchiectasis and aspergillosis. When I am well I start going to the baths and then maybe a month later I have breathing problems again. I recover don't go to the baths for several weeks, return and the cycle starts again. Don't know whether it may be related to chlorine in the baths having a delayed reaction. The professional verdict seems out on this but I did read on the web that chlorine mixed with urine, skin cells and other nasties ugh! produces a chemical called trichloramine which can cause irritation in the lungs. Would like to know anyone else's experiences. Thank you.