take a piece of deli sliced turkey and spread a thick layer of wasabi all over it, then when you see the drug dog, toss it to him. if i'm right, then as long as he eats it, his sinuses will be in too much agony for him to concentrate on smelling your stash.

then again, i have no idea how these dogs are trained or how wasabi affects them. just thought i'd toss an idea around.