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 Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center asthma tobacco Asthma Initiative of Michigan Understanding the Hidden Health Risks of Vaping UL Research Institutes Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA