(From KHN) Academic air-quality experts are now telling schools to be wary of air purifying devices that promise to kill COVID-19 particles after several devices sold to schools were found to produce levels of ozone that exceeded the EPA standard for ground-level ozone — a limit set to protect children from the well-documented harm of ozone to developing lungs. In New Jersey, for instance, dozens of schools have purchased devices made by another company that says they emit ozone, which can exacerbate asthma and harm developing lungs, according to decades of research. There is virtually no federal oversight or enforcement of safe air-cleaning technology. Only California bans air cleaners that emit a certain amount of ozone.
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