Was driving home from work in my 98 Mark a little while ago when the smell of gas hit me like a ton of bricks. I pulled over at a gas station and looked under the car and popped the hood to look for leaks, didnt see any or any gas pooling up anywhere. I couldn't smell gas outside the car, but once i got back in and started driving again it came right back, and it is STRONG. Once i got home and got out of the car i couldnt smell it again, i only smell it in the car. Any ideas whats going on?