a couple weeks ago my fuel oil lines leaked into my crawlspace. I
could smell it powerfully in my house. When I got into the crawlspace
I discovered thousands of gallons of water (the wtare table is very
high, so some water isnt unusual) with the oil spread out on the
surface.

I sopped up as much as I could with oil-absorbent pads from my oil
company, and pumped out as much of the water as I could. Now here's
the bad news. I want to sell my house in the next 2 months and I'm
sure that some smell remains, and that I cant even smell it anymore.
Any ideas for ridding the crawlspace and house of the smell?