How do I remove gas smell from garage?

Gas leaked from my truck into the garage last night. It was only about 2 or 3 cups, but it is very potent. I left the garage up, and a window open, but it still smells awful in there. What can I do to get it out? Was going to use bleach, but wasn't sure of the effects of it mixing. My husband took the hose and washed it out of the garage, needless to say, it spread the smell even worse.