What Does a Vape Smell Like? 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 Vaping Leave a Smell? Tips for Freshness Ever wonder if VAPING has any secondhand smoke? Check out our myths and truth post to learn more. TLDR: Be courteous. Just because vape aerosol doesn't smell as bad as cigarette smoke, Does Vaping Smell? and How to Tell if Someone Is Vaping Ultra Liquid Labs 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.