We just finally bought our first smart car ? 2009 passion. 72,000 miles. We are in pa found it in NY drove over 4 hours and get it rented a U-Haul and brought her home ? it was sitting for 6 months in a pole barn. Former owners very nice and honest . They filled the tank for us prior to us picking it up. We took it off trailer and it smelled like raw gas. Drove it up and down the road , sometimes it smells sometimes it don’t . We have been reading up on line and seems like it’s either the fuel pump or just over filled. Comes thru heat vents whenever they are on. If it’s over fill how long does it take to stop? And how does my husband figure out which one it is ? And any other suggestions what it might be? Former owner swears it did not do this before , and so far they have been completely honest with us .