Second Hand Vaping: Minimal Impact Compared to Smoking News Is Second Hand Vape Smoke Harmful? 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 Symptoms Of Second Hand Vape Smoke Secondhand smoke is harmful to those around you, putting them Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM Health Risks of E Cigarettes and Vaping American Lung Association