Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Secondhand Vape Exposure: Effects, Who's at Risk, and More How Bad Is Second Hand Vape Smoke Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky Secondhand vape exposure: Risks and side effects Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Secondhand vape plumes could form lung damaging radicals American Chemical Society