A new study published in the Journal of Environmental Science found that urinating in the pool creates two chemicals that can aggravate your lungs.

Dr. James Blando, environmental policy professor at ODU, says the mix of urine and chlorine creates vapors. He says children who have asthma will be especially sensitive to this mix. He says the main question to ask is whether your indoor pool has ventilation.

Outdoor pools, he says, don't present this problem because it dissipates in natural air.

Some parents do use salt water pools though it's costly.

Blando says Kiddie sprinklers are also threat for spreading disease Since That water is recirculated. It's easier for kids who may have diarrhea or the norovirus to spread it.

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