Even when vapes are marketed as nicotine free, they may contain small amounts of nicotine. This may be due to cross contamination during manufacturing or deceptive practices. Some manufacturers may use synthetic (man made, lab created) Today's nico teen addicts: What role does 'juuling' play? Connecticut tobacco shops, schools grapple with sharp rise of teen vaping Hartford Courant Ex smokers 'freaking out' about ban on Juul pods and e cigs