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 If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. Inhale this: What does vaping do to your lungs? 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 Do You Swallow The Smoke From Vape Is It Bad To What Happens If You Swallow A Zyn Pouch? [Comprehensive Answer]