How old are these flats Anne? Hardly that old that so many deaths occurred in them. Actually it is rare to die in a home, most people unless murdered die in hospitals, accidents etc outside the home.
Its POINTLESS in arguing with people with scientific backgrounds, (probably just got a scientific image on his screensaver lol).
The believe the dogs ANY DOG who is highly trained rarely makes mistakes.
Look at all the dogs used in bomb squads, drug squads, who are TRUSTED to do their job.
The dog alerted to cadaver it doesnt mean it was a child, just that someone had lain dead in the apartment at some point in time.
BEING A PARENT, whos child had just gone missing fromt he apartment, and facing this evidence from the dogs, I would be asking the police, no begging the police to find out what happened, NOT MAKING STUPID silly comments about them as the McCanns did.
AND AGAIN, the exact case they used AGAINST the dogs turned out the guy had killed his wife and the dogs were right all along lol....
I don't know when those buildings were built, Colombosstogey, the type of door, lock, window, shutters... tells it was in the eighties.
Eddie's alerts indicated death scent, Mr Grime doesn't seem to have doubted that (double blind tests serve precisely to check that the dog doesn't alert falsely, which would obviously and imperatively eliminate him).
Forensic organic elements, when no body is visible, serve only to identify whose body originated the VOCs, not their presence.
Consider the double alert behind the sofa (Eddie and then Keela). If analysis identifies the blood as belonging to (alive) A, can you determine that Eddie alerted to A's decaying blood and not to (missing) B's death scent ?
No, it is possible but not certain.
Now, in the same flat, Eddie alerts on another spot and, this time, there's no blood and there's no item at all that can be removed and analysed apart. Can it be deduced that, behind the sofa, the dog then alerted to death and not to decaying blood ?
No, it's possible but not certain.
This is why Mr Grime refused to speculate, saying the minimum he could say without exposing himself and his dog, carefully staying behind the shield of the required forensic corroboration.
But his concise observations are nonetheless very interesting.
BTW there are techniques now to capture the air in a test tube at the point of the scent cone indicated by the dog and analyse the components (the relative proportions of VOCs).