Avoiding Tobacco Smoke and E Cigarette Aerosol Is a Key Part of Asthma Management Asthma and Allergy Foundation of America Vaping, Environmental Toxicants Exposure, and Lung Cancer Risk Vaping and smoking are often compared in terms of health risks, with research suggesting that while vaping may expose users to fewer toxic substances than traditional cigarettes due to the absence of Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London