Another news item on vaporizer safety ...
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Man Burned When E-Cig Explodes in Pants at New York's Grand Central Terminal: MTA
A man working at Grand Central Terminal suffered leg and hand burns after his e-cigarette exploded in his pants pocket, officials say.
Central Cellars assistant manager John Lee said it looked like fireworks exploding when the vaporizer pen suddenly blew up in his colleague's pants on Wednesday morning. ...
The link has videos
Man Burned When E-Cig Explodes in Pants at New York's Grand Central Terminal: MTA