What Does Vaping Do to Your Lungs? Johns Hopkins Medicine What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Your Body Immediately After Vaping an E Cigarette Mouth to Lung Vaping True Vape Ltd 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 The Chemistry of Vaping ChemistryViews