Marijuana scratch-and-sniff cards used by N. Ireland police to spot gr

[OZ Stoners]

Northern Ireland police are distributing marijuana-smelling scratch-and-sniff cards to help people recognize the smell of weed being grown illegally. When scratched, the cards produce  the scent of cannabis in its "growing state," says the Guardian newspaper, which adds the odour is different from the smell of marijuana smoke. "More than two cannabis factories are being uncovered every week in ...

 

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