Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Complete Guide to Secondhand Vaping Devices Vape Direct Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Secondhand smoke and secondhand aerosol Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Tobacco Smoke, Vaping, and Asthma AAFA.org