Well, check for a fuel leak. Park the car in a clean area (no spots on the garage/driveway/parking spot) and let it run for a bit, and see if there are any drips (keep your AC off so that doesn't condense any moisture)

Pop the hood and check around the fuel rails, lines, and injectors to see if there's any fuel leaking there.

Lastly, get under the driver's side of the car, and check all your fuel lines/fuel filter.