Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Chugachmiut See the sites below for more information on secondhand smoke: https: www.healthline.com health second hand vape#at risk groups https: www.webmd.com lung cancer guide vaping lung cancer#:~:text=Ecigarettes%2C%20sometimes%20called%20vapes Effect of second hand fumes from vaping on young lungs Another Gross Reason to Put Down the E Cigarettes American Lung Association Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London