Smell in basement

Hello everyone, I have a finished basement, over a year ago it flooded and a professional mitigation company removed the carpet, pad and some dry wall, fans and dehumidifiers were left to dry out the room. Over a course of a year I laid tile floor, fixed the drywall and finished the room up and there really wasn't a smell. My dog decided to use the room as a bathroom, we got the problem under control now. but now there is a nasty smell that is lingering. I have been dealing with this for a few months now. I have tried bleach, baking soda, vinegar, soap, natures miracle, and natures miracle advanced formula and nothing will remove the smell. I have cleaned all the spots numerous times that he had peed and pooped on, but there is still this nasty smell in the air. If you go in the adjoining room, you really don't smell it so it is defiantly coming from the main room. Any thoughts?