If you go to the summary statement of that report:it sounds like any indication was not intense enough to be sure.
I think you're quoting from a different statement than the one I linked to. However, the dogs didn't, as far as I know, provide a definite indication of having found the scent during any of their tracking exercises, inside or outside.
Therefore the probability that they smelled either Madeleine or an abductor/lifter inside the blocks is equal to the probability that they followed the same scent outside.
If they were detecting the same scent the question is why they showed interest in 4G. We have been told that Madeleine went along the path and that she went upstairs to 5H. She was never in block 4, as far as we know. Her belongings were moved from 5A to 4G, probably mixed up with the belongings of other family members, but she was never physically present.
There is also no reason why any abductor/lifter would be upstairs in either block. Any reasons given would be pure guesswork. Even then, reasons for being near 5H, 5J and 4G and nowhere else would have to be found.
There is one person who we
know handled the blanket and the towel, walked the path and went to 5H and 4G. Therefore the possibility that the dogs followed their scent has to be included. In that case the dogs weren't tracking Madeleine or a mythical abductor/lifter, they were tracking Kate McCann's scent, which was legitimately present in all the locations, according to her husband.