E cigarettes and Vaping Commercial Tobacco Use MN Dept. of Health Study suggests switching from smoking to vaping indoors may reduce children's secondhand exposure to nicotine Does Vaping Cause Second Hand Smoke V2 Cigs UK Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Project Filter Secondhand Vape Informational Poster #1 Idaho Health Tools