The rate of wheezing rose by 3.39% for every additional indoor chlorinated swimming pool.
Though hotel staff claims the pool contains salt water, instead it seems merely non-chlorinated and almost magically pristine.
"It is also important for anyone suffering from diarrhoea to avoid swimming pools as Cryptosporidium can survive in chlorinated water".
It also found that many avoid swimming for cosmetic reasons, such as the effect chlorinated water has on their hair.
Many pools are moving away from boxy or circular shapes and chlorinated water and are instead installed in eye-catching geometric shapes with saltwater.
Last year the state of California added the commonly used flame retardant TDCPP (chlorinated Tris) to its list of known cancer-causing chemicals.
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When a pool is properly chlorinated, however, bacteria like E. coli should be killed off, since proper pH levels typically take care of the issue.
Sandy motel floors, over-chlorinated pools, and too much junk food?
Reduces heated hot spots and keeps chlorinated water evenly distributed.
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The listing of chlorinated Tris went into effect in October 2012, which means any product still containing the flame retardant needs to come with a warning label in California.
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They've specifically fought to protect flame retardant chemicals such as chlorinated Tris, which is so dangerous that companies voluntarily stopped using it in children's pajamas more than 30 years ago.
But while scientists have warned us about chemicals such as chlorinated Tris since the 1970s, they continue to be used in products all around us, including furniture, cribs, mattresses and high-chair cushions.
Thomas Lachocki, the CEO of the National Swimming Pool Foundation, says that in order to be properly chlorinated, pools should contain 1-4 parts per million of chlorine and pH levels should be within 7.2--7.8.
It was not the best of facilities - my locker door was busted, the shallow pool was excessively chlorinated and there was nothing hot about the hot tub - but floating in a rooftop pool before getting on my flight capped off what was the most fun I have ever had in an airport and led to a deep, relaxed sleep on the plane.
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