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 Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London The Hidden Consequences of Vaping on Oral Health American Association of Orthodontists Tobacco Smoke, Vaping, and Asthma AAFA.org All about vapes what's in them, how do they work, and more Philip Morris International