Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN News Is Second Hand Vape a Thing Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Secondhand vape exposure: Risks and side effects Secondhand vape plumes could form lung damaging radicals American Chemical Society Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London