Study suggests switching from smoking to vaping indoors may reduce children's secondhand exposure to nicotine About one in four adults in California report being exposed to secondhand smoke or vape in the past two weeksoften on sidewalks, at home, and in recreational spaces like parks and beaches. Project Filter Secondhand Vape Informational Poster #2 Idaho Health Tools Should I Be Concerned About Secondhand Vaping? Have you ever breathed in secondhand vapor from a vape? What exactly are you inhaling? It turns out it's a lengthy list of chemicals. FULL STORY Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA