Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Effects Of Second Hand Vape Smoke Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM What Are the Risks from Secondhand Vape Smoke? NVB Inc. Secondhand Vape Exposure May Be Risky for Asthmatic Teens UCT Lung Institute In secondhand vape, scientists smell risk Health cherokeephoenix.org