Once you amputate it’s gone...try casting first. Nature is amazing

I discovered a product years ago that really works called Odoban. It works by killing the bacteria causing the odor. Get a gallon of concentrate from Home Depot for under $10.
I’d dilute it with at least half water. The dilution ratios are on the label. Thoroughly saturate/soak the area and leave it. You can use it on carpet too.