When you fill up the tank too full you can smell the gas coming through the air vents is there something wrong maybe a leak somewhere?
There's 2 things that concern me the first is the gas smell when you fill it up
before it comes through the air vents and when I have the car in park or have
my foot on the brake and it's idling sounds like there's a loose metal panel
shaking up under the driver seat, what is this noise?