Secondhand marijuana smoke can cause range of detectable effects, study finds Hub How secondhand smoke, thirdhand smoke & vaping affects kids Secondhand Vape Exposure: Effects, Who's at Risk, and More In secondhand vape, scientists smell risk American Heart Association Focused on the Facts: Secondhand Marijuana Smoke American Nonsmokers' Rights Foundation no smoke.org Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA