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% Can You Get Secondhand Smoke From a Vape or E Cigarette? According to the American Heart Association, the risks of secondhand smoke from vapes are still being discovered. Learn about the dangers of secondhand smoke from vapes. Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals