I'm wondering if you still searching for an answer but any way you can try a basic vinegar solution, fill a small spray bottle with white vinegar. Spray the affected area and then work in with a scrub brush. Let stand. Once the solution has penetrated the affected area, go over with a steam cleaner or wet vac.
Never start with vinegar. Vinegar, although effective as a cleaner, will “set” the stain like it sets the color of dyes on Easter eggs Try vinegar after exhausting other options, and especially if you're only trying to neutralize smell, not stains.
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