Chlorine isn't the direct cause of red eyes after swimming.
When chlorine reacts with sweat, urine, or even open wounds in the water, it forms trichloramine—a irritating chemical compound responsible for that strong chlorine odor and eye discomfort. A heavy chlorine smell often signals the pool isn't as clean as it should be.
Experiencing a persistent cough post-swim?
This too stems from chlorine combining with natural body substances, irritating your airways.
Swim smarter for a better experience
No need to avoid the pool—this insight from U.S. researchers underscores simple hygiene steps: shower thoroughly before entering and avoid urinating in the water to keep it safe for everyone.
