Tobacco Smoke, Vaping, and Asthma AAFA.org Understanding Secondhand Vape Dangers and Their Impact on Your Lungs 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 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