Below is a video discussing a journal article from the American Chemical Society discussing peeing in the pool. ("Volatile Disinfection Byproducts Resulting from Chlorination of Uric Acid: Implications for Swimming Pools" in Environ. Sci. Technol., 2014, 48 (6), pp 3210–3217).
To summarize the science:
As a side note, we've noticed that many personal care products include urea or urea compounds. (Read the ingredients on your shampoo or body wash). As a precaution, swimmers and people exposed to chlorinated water may want to think twice before using products containing urea. Of course, using SwimSpray would neutralize any residual chlorine before using those products, ensuring that the urea does not react with residual chlorine to make chloramines.