Vaping & Lung Health: Comparing with Smoking How to Vape Properly Guide for Beginners V2 Cigs UK Smoking and vaping are often compared, but neither is harmless. While they work differently, both can expose the lungs to addictive nicotine and harmful chemicals that impact breathing and overall health. Smoking Vaping refers to the act of inhaling and exhaling aerosol, often called vapor, produced by an electronic cigarette or similar device. These devices heat a liquid that usually contains nicotine, flavorings, and Vaping: The Good, the Bad and the Popcorn Lung MPH Online What Does Vaping Do to Your Lungs? Johns Hopkins Medicine