Should I Be Concerned About Secondhand Vaping? Tobacco Smoke, Vaping, and Asthma AAFA.org 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% Secondhand Smoke and Electronic Cigarette Aerosols US EPA Can you get second hand smoke from vape? Vaping Post