A few years ago there was an orange scented deodorizor for pet odors. I'm guessing maybe someone went a little overboard with the stuff and soaked the floor. I'd pull up the carpet and clean the floor.

Thanks, Lizql -- Ya know, I've been starting to think in that direction myself. There's this sawdust-like stuff that they use on the carpets where I work that has an overpowering smell of oranges. I wonder if the previous owners used it in that room, and every time the weather gets damp, it brings out the smell? I guess I know what I'll be doing this weekend!

Theres this church that out side it smells like rotten oranges assoon as you go out side its like loads of real rotten oranges just made me think of that