Kelly You won't smell pee if you replace carpet--won't remain in floor beneath carpet but will remain in pad.
As you said- cat pee is bout as bad as it comes.
Had cat few months back that would pee in same place on carpet--(found out reason was because I changed brand of litter and cat didn't like smell of new litter)-but was too late as it had saturated carpet by time I discovered litter issue.
Regardless of what I did smell would not go away--so wife had been hinting/wanting hardwood floors so replaced carpet and no longer any hint of oder whatsoever.
As you said- cat pee is bout as bad as it comes.
Had cat few months back that would pee in same place on carpet--(found out reason was because I changed brand of litter and cat didn't like smell of new litter)-but was too late as it had saturated carpet by time I discovered litter issue.
Regardless of what I did smell would not go away--so wife had been hinting/wanting hardwood floors so replaced carpet and no longer any hint of oder whatsoever.

