one word - sniffer dogs
even if you got nothing on you they can still smell if you've been in contact with weed
You would think so, watching tv shows and movies and all .. dogs and there sense of smell that can be 1 million times more sensitive than humans lol
i am not so sure, in reality though ... maybe sniffer dogs are more like TV detector vans , bullshit lol
i only say this because of recent experiences, i would of thought a cop dog could smell weed at a distance like you say
i got caught out walking through a shopping center, i was not planing to go there, i had a few spliffs worth of very smelly weed in a cigarette box
the shopping center is very large, it had cops with machine guns and dogs in it, what a buzz kill that was ...
the dog came right up to me, did a big sniff and fucked off, maybe the dog had flu and was having a bad day, i do not know , or maybe they overplay how useful sniffer dogs really are
i mean i fell for it too, just like you
you need to test out this theory to be sure though LOL
peace