St. This vaping device, called a JUUL, might look like a USB drive, but it contains nicotine and other harmful chemicals. Alarmingly, this easily hidden device and its enticing vapor flavors, like Teens say they don't vape, they 'Juul.' That makes the activity hard to track Los Angeles Times Juul, the vape device teens are getting hooked on, explained Vox FDA Orders Juul to End Vaping Sales Respiratory Therapy All Eyes on FDA: The Upcoming Regulation of Juul E Cigarettes MedPage Today