Had a 95 Dodge Dakota pick-up, when I went to pick it up, the seller told me he filled the gas tank for me (nice, right). So we are standing there talking before I drove off and I say, "Do you smell gas?" He's like, "yeah I just filled it up, it goes away."
Well yes the gas gauge showed a full tank...even after 150 miles it showed a full tank. #1 the gauge didn't work of course he didn't tell me.
#2, the reason you could smell gas it that someone had replaced the, in tank, fuel pump and instead of dropping the tank to do that, they cut a hole in the bed. In cutting a hole in the bed they also cut a nice slice in the plastic fuel tank. There was a factory bed liner so you couldn't see the hole in the bed until you took the liner out.
I fixed it up and sold it...hated that vehicle more than any I've ever owned !