Is Second Hand Vapor from E Cigarettes Dangerous? [Infographic] The Local Brand Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA 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 Despite widespread smoke free policies in California, rates of recent exposure to secondhand tobacco smoke, vape aerosol, and cannabis smoke among adults aged 1864 have been slowly increasing since 2020, with vape exposure