Persistent Gas Smell After Fill-up

I've owned my '94 XLT for only about 6 mos and - for just the second time - I filled the tank with gas. I pumped until it shut off automatically and did not "top off". I observed right away that the gauge did not indicate "F" - more like mid-way btwn 3/4 and "F". Since 18.679 gals had just been added to a 1/4-filled tank, I surmised that the gauge was off, not the pump. This was 11/15 and ever since then there has been a fairly strong odor of raw gas that can be smelled whenever I approach the cab. I did not spill gas that day. I checked to see if I screwed the cap back on tight. I did. I see no gas puddles in my driveway.

Any ideas about what is causing this smell? If it matters, the fuel pump and fuel regulator were replaced a month earlier. And, when I first filled the tank, the gauge went a little ways past the "F".

Thanks