Vaping: What it is, and Tips for First Time Vapers Spark Your Life Vapers & Hookah Smokers Exhale Through Nose More Often Than Cigarette Smokers NYU Langone News Mouth To Lung (MTL) vs Direct To Lung (DTL) Vaping Nexeem 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