I was out late last winter with about a 5mph wind blowing to the SE. I was facing due E and not paying much attention to the SE. I glanced to the SE and here comes a coyote, dead downwind of me. I got my laser on him in scan mode, and at 492yds he turned inside out and ran like [beeep] back the way he came.
Look at the drug sniffing dogs, they can find a Kilo of drugs, tripled sealed in plastic, stuffed inside the diesel fuel tank of an onion truck. Their reward is a piece of kibble.
I don't think you can fool 'the nose'.