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With more and more states legalizing marijuana, companies are lining up to create the first marijuana breathalyzer. Officials say the toughest part is getting stoners to stop trying to inhale off the breathalyzer.

With more and more states legalizing marijuana, companies are lining up to create the first marijuana breathalyzer. Officials say the toughest part is getting stoners to stop trying to inhale off the breathalyzer.