vaping: what's really in that cloud? Vaping may seem more harmless than other types of smoking, but many contain nicotine and chemicals that can hurt your lungs and keep you hooked. Inhale this: What does vaping do to your lungs? Relapses are reported in vaping related lung injuries, CDC says The Washington Post Experiencing Pain in Your Chest When Smoking? It Could Be Lung Damage Popcorn lung: Causes, symptoms, and treatment