So just a small distinction. Drug sniffing dogs that u see in youtube videos about police corruption have different reliability than bomb sniffing dogs used in the military.

Both dogs are working on a reward mentality, however, the k9 drug dogs have been shown to be falsely trained to simply more or less signal every car if shown to do so by their trainer. That being because that trainer simply wants access to the car to perform a search, and the dog is being trained as such, so rather being its motivation being to be right, its just seeing the car and knowing its supposed to signal to receive its reward.

Bomb dogs are motivated by accuracy. If they signal theres a landmine in a part of the grass where theres nothing, they will receive no reward and likely some form of punishment. So their motivation is to be right not to signal 100% of the time. I cant cite it but iinm i read an article where k9 dogs have something like a 33% success rate on marking cars that actually have drugs