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 National Emphysema Foundation E cigarettes are Poor Substitutes for Conventional Smoking in COPD Patients Smok Weed Vape Marijuana and Your Lungs: Is Vaping Safe for People with COPD ? What Happens When You Vape? Before you vape, please consider these risks Heart Disease: According to michiganmedicine.org, vaping regularly can cause heart disease and nearly doubles the risk of a heart attack. Stroke: The Heart and Stroke The Chemistry Behind Vapes