About sniffing dogs, in the 80's I went to a conference in Edinboro, Scotland. Took my daughter. On the day before we left to come on, I went to a fancy cheese shop (of course) and bought a wax covered Scottish fancy one. Put in the luggage. Arriving in Seattle, and picking up our bags, the drug dog went right to the corner of my big bag. My daughter was a touch freaked. I said relax. The officer was all excited - saying - What to do you have girl? However, I guess the dog didn't make the behavioral sign for drugs and we went on our way. That dog did have a good noise for stinky fancy cheese.