Just because the gas smells ok does not mean that the tank is not full of water and sediment below the gas. That is what will get pulled into the pump and carburetor first.

I quietly cringe and walk away when people tell their hero stories about starting a long idled engine in 30 minutes after they dragged the car out of the barn/woods.

Connecting a battery to a car that has been sitting where rodents can eat the insulation off the wiring is a recipe for disaster.