There was a British company which attempted to develop drug and bomb-detecting tools powered by bees. They would condition bees to associate the smell of a particular drug or explosive with receiving a morsel of food. Then load the bees into cartridges, put a dozen or so of the cartridges in a wand format and hand them to security staff at airports.

It doesn't appear to have gotten off the ground, I can't even find the name of the company any more.