Does anyone know how to get rid of the smell of pee?

So my son was potty trained 2 months ago and has pee accidents probably once a week, but it was more frequent in the beginning

I feel like my house smells like pee now and I can’t get rid of the smell.

We had our two couches and area rug in our living room(that’s where he spends most of the day) professionally cleaned, and the guy who did it used a special antibacterial deep cleaner designed to get rid of odors, and I still smell the pee. He also put a protective chemical on it, which I feel like was probably a scam, and since then I also use a cloth cover over the couch that is machine washable. I wash it every night and I still smell it.

My son still sleeps in diapers, so I don’t smell the pee in his room, but I feel like it’s on his blanket that he is attached to, and I wash his blankie, and it literally comes out of the dryer and it still smells. I have to wash it two times in a row.

When he has an accident, I put his pants and underwear in the laundry room right away, if my washing machine isn’t being used, they go in right away, if I can’t do it right away, I do it ASAP. I feel like I am constantly doing laundry between his pants underwear couch cover and his blankie

I have no idea what is going on, but I constantly smell it.

My husband thinks I am crazy. He doesn’t smell it at all, but I think he is just mad at me for spending so much money to have our couches and rug cleaned. I feel like I am going crazy. Where could the smell be coming from? How do I get rid of it? I walk around the other a bottle of Lysol and spray the shit out of the air and it doesn’t help.