Gas smell

Yes, this is normal. All gasoline expands at high temp - to avoid the potential of a dangerous situation the cap will vent and there is the potential for a small amount of fume during venting. Double check that the cap is tightened and the gasket on the cap is not damaged. If the dealer is reporting that the cap/tank/venting are operating within normal I would not worry - one could have it double checked at a local shop that can inspect the fuel tank/system or a state emissions test as it would do a cap pressure test to ensure the cap is sealing properly. Other than that you might want an EV :)