Secondhand Vape Exposure: Effects, Who's at Risk, and More Should I Be Concerned About Secondhand Vaping? Tobacco Smoke, Vaping, and Asthma AAFA.org Secondhand Electronic Cigarette Aerosol and Indoor Air Quality US EPA According to a Centers for Disease Control and Prevention (CDC) study, 40% of U.S. adults believe that children's exposure to secondhand aerosol from e cigarettes causes only some or little harm, and 5% Project Filter Secondhand Vape Informational Poster #1 Idaho Health Tools