Try covering your outfit in cat litter, but NOT the clumping kind. Leave it in a plastic box, or in a plastic bag, for a few days to a week. I found this works very well in eliminating strong animal pee odors. Won't take care of any stains, though.

And if you can't smell anything, have someone who can check to see if it is still there.

Your cats maybe smelling other animals that were in the house prior to you moving in. Try using the kitty litter trick on your rugs and anywhere in your house your cats are concentrating on. Cat pee can and does penetrate through to the subflooring, especially if a pet continually used the same spot without it being treated. Leave it for a few days and vacuum.

Then again, it could be that your cat is just really "pissed" at you! Is it female? Female cats seem to hold grudges...mine does.