Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM Indoor Vape Vapor May Increase Lung Health Risks Technology Networks Children at risk: Emory study uncovers the hidden dangers of secondhand vape exposure Early research says secondhand smoke from vaping may not be as bad as cigarettes, but it's still not harmless. https: fox59.com news national world does vaping cause secondhand smoke doctors explain the side effects