You know, I wondered that too, but I could not smell it either. She must have been using that spray that covers up cat pee.
I only saw it when I pulled out my flashlight and shined it along the wall and then wiped a wet paper towel across it. After getting wet you could smell it.
After that, I bought one of the UV flashlights and put it in my tool bag.
LOL! I didn’t know anything had been invented that could cover up cat pee.
Why was the GFI being used in that location? What was it intended to protect?