Does Vaping Smell? and How to Tell if Someone Is Vaping Ultra Liquid Labs Does Vape Smoke Stick to Walls? Velvet Cloud Banish Stubborn Vaping Odors: Freshen Your Home Now Sitting somewhere when a cloud of cotton candy vapor washes over you? If you can smell the sweet scent of a vape, that's not a great sign. What does the smell of stale tobacco smoke mean? Thirdhand Smoke Resource Center