Gabby -
i never said any thing about a "scent". Scent is a smell. I said 'sent'. Sent - the past tense of send.

as far as Rocco, I never said anything about the dogs recognizing him, I said as far as Roth recognizing him. etc..

what i'm saying is that if I was in mike's position, you could rest assured that those pipes would have several pipes and grates welded at the entrances and exits to them to stop pretty much anything except for water and wind from passing through.