Does Vaping Cause Secondhand Smoke? 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 Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Secondhand vaping may pose risk to your kids: New study Tobacco Smoke, Vaping, and Asthma AAFA.org