The Vexing Vape: Officials Say Small Vaping Device Juul A Major Health Risk To Youth WKMS Vaping goes mainstream What Are the Best Juul Alternatives? JUUL Review: 6 Years Later Vaping360 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.