Do Weed Vapes Smell A Complete Guide to Vapor Odor Mister Vape What Does a Vape Smell Like? Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Does Vaping Weed Smell? (More Terpenes = Stronger Smell) 5 Methods Teens Use to Mask the Smell of Marijuana 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.