Common household cat repellent?

My cat recently had a seizure and as you know they temporarily lose control of their bladder during it. Well he wet this one area of carpet during the seizure and I cleaned it, but since his scent is in there I think he's gone back at least once or twice and sprayed it again. I just cleaned it yet again with heavy duty carpet cleaner, and then I used Febreeze. I'm not able to go to the pet store for a day or two, so I was wondering if you guys know of any common household item I can use to repel him from the area and deter him from doing it again until I can buy proper cat repellent spray? Thanks in advance!