E-cigarettes used to smoke marijuana

It’s easy these days to spot people smoking electronic cigarettes – the battery-powered, pen-sized inhalers marketed as cleaner alternatives to their traditional tobacco-packed counterparts. What may be harder to detect, experts say, is what exactly is inside some of those discreet devices. More and more, people are smoking marijuana out of e-cigarettes and vapor pens — right out in the open with little or no fear of getting caught, users and experts say.
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