– If you’ve been in a chemically treated pool (like most pubic pools) then you are well aware that the pool water can smell; but no, it’s not the chlorine and no, it’s not normal. “The heavy chemical odor is not from chlorine. It means that unhealthy chloramines have formed in the water, created from the mix of chlorine and contaminants. Chloramines are not as effective in disinfecting swimming pool water. A well-maintained pool has little odor.” If you’re concerned about the smell of your swimming pool or the public pool facility you are visiting, call in an expert or ask to have the pool water tested to make sure it is safe.