Does Vape Juice Expire? Shelf Life, Signs & Safe Use Guide Does Vape Juice Expire? How Long Does It Last? Smoke and vapor may disappear but the danger doesn't. That's why it is important to preserve smoke free spaces. Tobacco smoke and vape aerosol cause indoor air pollution increasing risk 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