Yes, I think so and have 2 examples:
1} In a big enclosed garage there are two cars parked 20 feet away from each other. The dog goes to the first car, runs around it and the handler coaches him to come over to the second car. The dog runs around it back and forth then goes back to the other car. On his own the dog returns to the second car, sniffing around it and after looking up and around, making another pass around the car suddenly stops short and alerts at the bottom of the drivers door.
It was the same scent the dog had sniffed before on other items in the case.
2} At the body farm they have buried body parts 3 or so feet down and all along a trail in the woods. The dog has been given the scent of one of those parts. He wanders down the path, sniffing on the ground, keeps going and raises his nose in the air, wandering around and finally gets to a point where he starts sniffing the ground around and around and then suddenly alerts.
He alerted to the correct body part after passing many others that all contained caverdine, the main part of the scent that attracts the dog.
BTW, It is all the other chemical components of the body in question together with the caverdine that make up the individual death scent for that person. So every person has their own individual death scent which is unique only to them.
We are on the edge of this new technology called 'Enhanced Scenting' which will revolutionize how human recovery dogs will be used in finding a particular person. It is being used by the FBI now, also in St Louis, developed in Birmingham England. xox