If a 1996 Toyota Camry is using too much fuel and it sometimes smells like fuel in the car is it because of a leak in the fuel tank?
Is the gas cap attached to the car? could you have spilled some fuel in the trunk while hauling a gas can? If neither of those 2 apply to your situation, I suggest opening the hood and inspecting the fuel lines, fuel rails, fuel filter, fuel pump and injectors. good luck