Maybe this has been mentioned, as I haven't read everything yet, but, I was thinking with the cops around the car and all, sure it smelled bad, but maybe having a whole container of Febreeze sprayed inside the car, it might have altered the smell at that time (being the same day as the Febreeze) so it smelled bad, but, not something they could say, oh wow, dead body smell. As the Febreeze dissipated the smell might of changed. I know Febreeze leaves freshness and all, but, I have never sprayed that much in a small space, and never used to cover up any kind of strong odor, so I don't know exactly what it would do.
Does this make sense? It has been a long day for me and I think I need to rest up and think of non trial things till the morning.
Hugs,
Rosie