Secondhand Vape Exposure May Be Risky for Asthmatic Teens UCT Lung Institute Myth Buster ~ "Second hand vape smoke" is actually water vapour and is not harmful to other people or the environment. #vape #vaping #vapeuk #ecigerette #smoke #quit Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Secondhand smoke and secondhand aerosol Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA