impatientredhead
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I was under the impression that it was a chemical process that would actually seep into the air ,wall,etc . I thought that is how the gas test for decomp worked.
Yes and no, but the dogs are indicating where a body has been, generally in contact with. The gas test does collect gases that are being emitted from the decomp fluids and tissues.
And if a body had been in the room for a couple of weeks or so the dry wall would and carpet would probably be saturated in a way that the dogs would hit on in even if the body never touched it, but much like the Caylee Anthony case at that point of decomp it would be apparent before the dogs confirmed it.
In this case we are probably talking a couple of day so on the longest side. The dogs can tell that a body has been in contact with sheet for as little as an hour, but an hour after the person has died and the sheets are scented, the walls are not going to be.
So if she was in the house deceased for 12-48 hours as an example and her mattress and bedding are gone there is likely nothing for the dogs to hit on.