What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Thirdhand Smoke Resource Center Protecting Californians The Health Effects of Vaping Indoors Indoor Doctor Vaping could harm your lungs, even within days or weeks of doing it. Don't let vaping harm your health. How Long Does Vape Smoke Linger in the Air? Have you ever breathed in secondhand vapor from a vape? What exactly are you inhaling? It turns out it's a lengthy list of chemicals. FULL STORY