Effects of Aftermarket Electronic Cigarette Pods on Device Power Output and Nicotine, Carbonyl, and ROS Emissions Chemical Research in Toxicology Study: Juul Pods Contain Caffeine. What's It Doing There, And What Does It Do? England's tobacco control programme lead Martin Dockrell who's been influential in shaping the U.K.'s pro vaping approach and a new vaping bill introduced to the British Parliament this week advised Juul JUUL2 Juul Labs Science