If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. 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 5 Vaping Facts You Need to Know Johns Hopkins Medicine Sobering simulation shows what really happens to your body when you inhale from a vape. , A "disturbingly realistic" 3D animation has gone viral, pulling back the curtain on the invisible damage