While early research suggests it may not be as dangerous as secondhand smoking, it's still not harmless, experts say. https: www.wate.com news does vaping cause secondhand smoke doctors explain the side effects ?utm_medium=social&utm_source What Chemicals Are Present in Secondhand Vape Emissions? Secondhand smoke and secondhand aerosol Vaping Versus Smoking: Are Electronic Cigarettes the Savior? Arteriosclerosis, Thrombosis, and Vascular Biology Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Is Vaping Better Than Smoking? American Heart Association