In secondhand vape, scientists smell risk American Heart Association Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals How secondhand smoke, thirdhand smoke & vaping affects kids Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN