E Cigarettes

“We know that they are much less harmful than smoking tobacco, and they have been shown to help smokers quit," said Prof Caitlin Notley.

Over 450 possible cases of lung illness associated with the use of e-cigarette have been reported in 33 states.

E-cigarette maker Juul Labs, based in San Francisco, is working on a plan to regulate but not ban e-cigarette sales.