Scented Cleaners React With Indoor Ozone to Form Harmful Ultrafine Particles

A Purdue University study found that scented cleaning products release compounds that chemically react with ozone present indoors. This reaction rapidly generates ultrafine particles capable of penetrating deep into the lungs. In poorly ventilated or enclosed spaces, these particles can build up to significant concentrations, posing potential health risks. Researchers suggest that using fragrance-free cleaning alternatives and improving indoor ventilation can help reduce exposure to these harmful byproducts.