5 Vaping Facts You Need to Know Johns Hopkins Medicine Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals Differing Opinions About Second Hand Vape Exposure Vaping Post Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Secondhand vape plumes could form lung damaging radicals American Chemical Society