Oh! I wonder if that's what I need! I topped off my tank this morning and that's when I smelled it!I still get whiffs of gas every now and then. I'm due for that EVAP canister recall and wonder if that has anything to do with it. The sheet actually says, ".............may be unable to absorb the necessary amount of gasoline vapors during vehicle refueling.......... It is Emissions Recall UB4.