How good is a drug dogs ability?

So I work in the MMJ industry in Colorado. I ve used my vehicle as legal transport for cannabis several times, not to mention having bud/kief on my shoes from working around it for 1.5 years. I m gonna be traveling across the central states but wont have anything on me(not worth the risk and losing my job). If I... show more So I work in the MMJ industry in Colorado. I ve used my vehicle as legal transport for cannabis several times, not to mention having bud/kief on my shoes from working around it for 1.5 years. I m gonna be traveling across the central states but wont have anything on me(not worth the risk and losing my job). If I get pulled over and they bring a drug dog, cuz a lot of states profile Colorado drivers, do you think a drug dog would pick up on the residue or the 16lb bags I ve legally transported? I m wondering if I should bring copies of my paperwork to prove it s all legal just in case but I dont want to be hassled. Any thoughts?
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