Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Tobacco Smoke, Vaping, and Asthma AAFA.org If someone smokes outside, do they bring thirdhand smoke indoors with them? Thirdhand Smoke Resource Center The Impact of E Cigarettes and Asthma: What You Need to Know Teen Vaping: What Parents Can Do Children's Hospital Colorado Does Vaping Cause Secondhand Smoke?