'65 Barracuda /6 strong fuel smell

Sounds like you might have a leak somewhere. You're going to need to check the whole fuel system front to back. It might be as simple as a loose connection somewhere along the line. First check everything cold to see if you see obvious drip marks where the fuel can be dripping and if that doesn't work just turn on the car and let it idle and inspect everything front to back. It might be up by the carburetor, or it might be back by the tank.
Taking a look at the bright side, these old cars run their fuel systems and very low pressure (5-6ish psi on a stock system) Meaning that if you go check the entire system, it's typically only going to be wet around where it is leaking. And if the gas has evaporated already, then it most likely cleaned off the area that it dripped through
Good luck!