Get yourself some Odor Neutralizing Agent, some Soil Moist, a 5-gallon bucket, and a fan with the same circumference as the bucket. Drill a ring of holes about one inch apart and about 3 or 4 inches down from the top of the bucket. Put one cup of Odor Neutralizing Agent and about 9 or 10 cups of water in the bucket and mix well, then add about a cup of Soil Moist and mix it all up really well. Now stick your fan in the top of the bucket facing up (the right size fan will fit snugly and won't drop into the bucket) and turn it on. In a few minutes you won't smell anything except the ONA, which smells like laundry fabric softener.
My fan wasn't exactly the right size so I stuck a dowel through two of the holes I drilled in the bucket to keep it propped up, and every few days I add about 1/4 cup ONA mixed with 1 cup water to the Soil Moist mixture in the bucket to refresh it. Truth be told, I did the whole bucket thing cuz it sounded like fun, but ONA is remarkable stuff; you could probably just mix a little of it with a lot of water in a spray bottle and spray your area as needed.
Google "Build Your Own Odor Neutralizing Machine" and you'll find a few different people who have described this in other forums with pictures and more detail...