In secondhand vape, scientists smell risk American Heart Association Do you know what's in a vape? Is Vaping Bad For You? Side Effects, Risks, Nicotine, Marijuana 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 What Happens When You Quit Smoking and Start Vaping Instead? Can vaping help you quit smoking? Harvard Health