A group of scientists from the USA have proved the high concentration of urine in the pool can lead to the development of swimmers of diseases of the respiratory system. Especially dangerous in this context of bronchial asthma.
The pool is a complex system consisting of several stages of filtration, feeding and suction of water. In most of the basins as a means of disinfection used chlorine. It effectively combats most viral and bacterial agents that protect swimmers from infection. However there is a caveat.
The bleach reacts with the urine. The result is trichloramine. This substance when injected into the upper Airways causes inflammation. That trichloramine provoked diseases of the respiratory system, e.g. bronchial asthma attacks.
Adherence to basic principles of hygiene in the pool is extremely important. When bathing, you should perform all of the simple rules associated with trips to the swimming. Not so much: wash before entering the water, never swim to the others and not to urinate while swimming in the pool.