Vape pen smells can build up and cause the room you vape in to have an odor. We'll share the best ways to prevent and fight vape odors quickly, along with easy Does Vape Smoke Stay On Clothes What surfaces does thirdhand smoke stick to? How long does thirdhand smoke last? Thirdhand Smoke Resource Center 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.