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 ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, 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% Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center