E Cigs and Second Hand Vaping: Dangers and Protections 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 Is Second Hand Vapor from E Cigarettes Dangerous? [Infographic] The Local Brand Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center