Update on the stink...

We found it!  at least I think we did...
We were looking around out in the garage to see if there was anything that could be seeping through the wall by the fridge.  Well the other day, Will had come over to look at the car ( which is running terribly) and he had this can of spray stuff that he had used to try to find leaks in the hoses.  It smelled really strong when he used it, but not rotten smelling...just like chemicals. 
Kelley saw the can sitting there on top of the freezer and it was kind of oozing some liquid out of the top.  He smelled it and it was pretty strong. ( it didn't smell like the smell in the house, but we thought we better get rid of it anyway)  So he threw it in the garbage.
Later that night when we got home from playing racquetball, it was much less stinky!  And the next morning...smell was gone! 
Weird huh.