Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Juul study shows secondhand vaping emissions are less toxic than cigarette smoke 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 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% The health risks of secondhand smoke are widely understood. But what about secondhand vaping? Second hand vape smoke linked to more asthma symptoms in kids