Glad you asked...
A fuel oil smell can last a while after the spill. It will get in your house, on your clothes and on your furniture. There are things you can do to get rid of it. Tips on getting rid of a fuel oil smell. http://www.ehow.com/how_5101353_remove-o...
Then again, this answer might help you...
There are a couple of things you can do to get fuel oil smell out of your clothes. First, you can try lemon scented ammonia, which should do the trick. If that doesn't work, try pouring a small can of Coke into the wash. Probably my favorite home remedy.

