Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times The Difference Between Healthy Lungs and Smoker's Lungs If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. Difference in Direct Inhale & Mouth to Lung Vaping NZVAPOR NZ 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