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 Secondhand Vape Exposure: Effects, Who's at Risk, and More Thirdhand Smoke Resource Center Protecting Californians Is Secondhand Vaping Something to be Concerned About? Secondhand Smoke and Electronic Cigarette Aerosols US EPA