Do Dry Herb Vaporizers Smell? Planet of the Vapes Secondhand vape exposure: Risks and side effects How secondhand smoke, thirdhand smoke & vaping affects kids How Long Does Vape Smell Last? (Room, Car, Clothes and Mouth) Does Vaping Leave a Smell on Clothes? Facts About Vape Odor 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.