Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Hidden Dangers of Secondhand Vaping Emory Health Digest Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Secondhand Smoke Second hand E cigarette Vapour Increases Risk Of Poor Respiratory Health Study Finds Cigarette Smoke Detector Secondhand smoke is harmful. Children exposed to secondhand smoke are at a 50 to 100% higher risk of acute respiratory illness. Say NO TOBACCO! Tobacco Smoke, Vaping, and Asthma AAFA.org