Should I Be Concerned About Secondhand Vaping? 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 Vaping Harmful? EDGE Vaping Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at Secondhand smoke from vaping could be harmful to children: study ABC13 Houston