Lou Lou
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I found this article in reference to your question
(quote)
All humans constantly emit microscopic particles bearing human scent. By the millions, these particles become airborne and can be carried by the wind for considerable distances. Airborne scent is concentrated near its source, follows the air currents, and becomes more dilute the further it travels. An air scenting SAR dog is especially trained to locate the scent of any human in a specific area and close in on the source of the scent, and can do so from hundreds of metres away, in heavy bush or in the dark. SAR dogs are not restricted to following the missing person's track and can search long after the track is obliterated, zeroing in on where the person is now, regardless of how they got there.
http://www.vsrda.org/about-vsrda/using-air-scent-dogs
Cheers, Karinna. Thought it was like that. So probs a no-go that WT was taken to a neighboring property as the dogs would have zeroed in on it?
(I have more faith in dogs than humans most of the time!)