Eddie alerts to living scents
What i cant understand is why all this palava over him aparantly alerting at a shelf in a cupboard? What if the dirty washing from a living Madeleine had been stored there? There would be a scent then, would there not?
And Eddie who was trained to alert to living scents would have alerted.
None of us know for certain what Eddie was trained to alert too, Sadie. Only the trainer would know that. However we do know that he could alert to blood from a living person (which had dried) and IIRC, he alerted to semen on a tissue in another case.
X contamination could be another cause for alerts. False alert is also a possibility.
Living scent as in a human scent, would be everywhere in the apartment.
SAR dogs who do this kind of search (live victims) usually do so in searching outside areas or areas of disasters, they will also find a cadaver if one is present.
Please feel free to correct me on any of the above, which is only my opinion.