Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM Characteristics of second hand exposure to aerosols from e cigarettes: A literature review since 2010 ScienceDirect Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice Tobacco Smoke, Vaping, and Asthma AAFA.org Secondhand vape plumes could form lung damaging radicals American Chemical Society