Originally Posted by dbcooper
The gun dog is trained to focus on odor that relates exclusively to the oils, powder and residue commonly associated with a dischared firearm and not human odor.
Another benefit to a gun canine under the aforementioned circumstances is that the dog handler does not have to worry about human scent contamination of the area to be searched. Every handler, at some point in time, has come across a scene where their colleagues have inadvertently trampled through the area to be searched. With the use a gun dog, those issues are not a concern for the gun dog handler that is trying to locate a firearm, because the dog focuses only on the odor associated with guns and ammunition.
Umm, don't cops carry guns? Or are their guns odorless?