Scientists Warn Against Breathing in Secondhand Vape 'Smoke' Newsweek Secondhand Smoke vs Vape: What the Science Says Is Secondhand Vape Smoke Bad for You? The Truth on the Trend Molekule Secondhand vape plumes could form lung damaging radicals Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN