I would recommend taking a lighter and inspecting it a close range. JUST KIDDING!!
The FPD is suspect, as well as fuel lines, even fuel injectors, etc. You really need to track it down before you drive the car any more or that puppy could catch on fire. It has happened MANY times........
Let the car sit for a few hours outside with the hood open to let any residual gas evaporate, then, on a calm day start it again and let it idle for a minute and then shut it off - you don't really want to get it hot. Sniff around and you should be able to get a good idea where the leak is coming from. Odds are it will be under the UIM - duh.
Make sure you have a good fire extinguisher IN HAND while you do this - have someone else start the car with the driver door open.
You should be able to call Mazda Corp. with your VIN and they can tell you if the recall was done - if not, a local dealer should do it for free. If it was done it is entirely possible that this could still be the culprit.
Seriously - don't drive it any more until you get it fixed!