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% Early research says secondhand smoke from vaping may not be as bad as cigarettes, but it's still not harmless. https: fox59.com news national world does vaping cause secondhand smoke doctors explain the side effects The Health Risks Of E Cigarettes Versus Traditional Cigarettes Henry Ford Health Detroit, MI How secondhand smoke, thirdhand smoke & vaping affects kids Tobacco Smoke, Vaping, and Asthma AAFA.org