Does Vaping Cause Lung Cancer? What We Know (and Still Don't) Vaping isn't just vapor. It's an aerosol filled with nicotine and chemicals that go deep into your lungs and straight into your bloodstream. Many vapes contain: Highly addictive nicotine How do you vape? Vaping Post How Many Puffs Are in a Cigarette & How Vaping Compares? How To Vape What Does Vaping Do to Your Lungs? Johns Hopkins Medicine