The Asthma and Allergy Foundation of America (AAFA) has issued a warning about a concerning new social media trend in which people are breathing in hydrogen peroxide through nebulizers to treat or prevent COVID-19.

The Asthma and Allergy Foundation of America (AAFA) has issued a warning about a concerning new social media trend in which people are breathing in hydrogen peroxide through nebulizers to treat or prevent COVID-19.