3 different vape pen electronic cigarette devices juul, aspire breeze, smok infinix, product shot isolated Stock Photo Alamy Kids sneak smoking substitute Juul into school, researchers find Vape devices like Juul 'reversing' efforts to keep youth from tobacco: study The Juul vaporizer can be disguised as a Sharpie or a USB stick, and contains nicotine, glycerol and other chemicals. 6 Vaping Products Disguised as Everyday Items