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 Vaping 101: How to Inhale Properly RED Box Vape Red Box Vape Mouth to Lung (MTL) Vs Direct Lung (DL) Inhale Explained E Cigarette Direct What vaping does to your body If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs.