Is Second Hand Vaping Harmful? EDGE Vaping When someone vapes around others they expose them to 'second hand aerosol'. But what happens to that aerosol then? Does it disappear or is it like cigarette smoke and stays around, sticking to Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center 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