If Eddie had been outside somewhere looking for cadaver scent of Madeleine, Grime wouldn't have been able to call him back numerous times as he wouldn't have known what Madeleine had been in contact with. The fact that Eddie was in 5a a place that Madeleine had been living all week Grime could call Eddie back again and again, if he hadn't Eddie would have ran out of the bedroom without alerting.
In the other apartments Eddie just ran in and out of the rooms, Grime didn't call him back constantly to the same room.
If there had been cadaver scent in the bedroom Eddie would have alerted straight away to it.
Eddie alerted straight away to the place where Keela alerted, a tiny miniscule of what is believed to be blood under one of the tiles, if that had been from where Madeleine had bled there would have been a lot more blood and Eddie would have alerted to the whole of the area behind the sofa.
So to me, no, Eddie did not alert to cadaver scent in 5a.