Hey,
First check the obvious, the fuel cap. Next any drips on the floor?
Fuel systems on todays car are rather high tech. Even the fuel tank cap has to hold pressure and vent when necessary. There is a vapor recovery tank that also has to hold pressure, vent, and be purged at times.
I believe you might have just noticed the odor while venting was occuring. However never overlook what could be a serious safety hazard. Have the system inspected.
Good luck and let us know. :)
pepermrj
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Tuesday, April 10th, 2007 AT 3:50 PM