Health Risks of Secondhand Smoke and Aerosols Factsheet 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% Secondhand Vapor: What You Need to Know Can You Get Secondhand Smoke From a Vape or E Cigarette? HEALTH Does vaping cause secondhand smoke? Doctors explain the side effects: Details below.