Juul study shows secondhand vaping emissions are less toxic than cigarette smoke What to know about vaping? Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC More middle and high schoolers are getting exposed to secondhand vape aerosols, study indicates The Boston Globe Secondhand Smoke and Electronic Cigarette Aerosols US EPA Toxic Thirdhand Smoke Residue Reaches Many Children Even in Nonsmoking Homes Research Horizons