Sacrifice some stash and sprinkle tiny bits all over the house

It's stupidly easy to break many dogs of training once they realize they don't have to play the sniffing game to get treats.

Just spoil the hell out of it and it'll be your best friend drugs or no.

I have heard before that they try to rehome those dogs with cops and former cops so that they can’t be used by drug smugglers to perfect their packing methods. No idea how true that is, but I doubt the veracity of this story.

He's already conditioned to perform behaviors for treats, so teach him to hit on something different, like your mom's vibrator collection. He'll starts barking inssessently every time he hears buzzing.

Put it in your ass

You're going to have to reach an agreement with the dog. Supply him with a cut of your stash in exchange for him not ratting you out.

Hiding that stuff from a dog briefly just for transit is already hard. You will not keep your stash away from it for long at home, especially if you use it.