Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM Can You Get Secondhand Smoke From a Vape or E Cigarette? Secondhand smoke and secondhand aerosol First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London