You make total sense and I think if they were deceased and moved from the home the dogs wouldn’t pick up on the scent .
Moo
MOO But the dogs WOULD pick up the scent of in the CC home at all. They would also pick up the scent of being moved out of the home. A human doesn’t have to physically walk out of the house to be tracked. I have seen a bloodhound track along a busy hwy miles down the road following the scent of a kidnapped child traveling in a vehicle.