My car has been smelling like gas lately and I havent just yet check under the car (going to in the next couple days) what I have sort of pin pointed is that the smell is strongest from the drivers side right by the rear wheel well. It only seems to smell like gas when I fill the tank right up. Any Ideas as to what I should be looking for? Hose? seal?

gas tank could of rusted through or mabe a cracked fuel line it is hard to say

Could be anything back there. You could have a leak in the tank or a line. You could just be smeeling fumes from a tank vent