WHILE DRIVING HOME IN 100 DEGREE WEATHER WITH A 3/4 FULL GAS TANK THERE WAS SUDDENLY A STRONG FUEL SMELL COMING FROM THE FRONT AIR CONDITIONING VENTS. THE A/C SYSTEM WAS IN RECIRCULATE MODE. THE SMELL WAS SO STRONG THAT I STARTED TO GET DIZZY. I OPENED ALL THE WINDOWS AND PULLED OVER AT MY FIRST CHANCE TO LOOK FOR A LEAK. I DID NOT FIND ANY LEAKS IN THE ENGINE BAY OR UNDERNEATH THE CAR. I WAS ALMOST HOME SO I STARTED THE CAR TO PROCEEDED HOME. WHILE DRIVING I SMELLED THE GAS FUMES AGAIN, THIS TIME I TURN THE A/C SYSTEM TO FRESH AIR AND THE SMELL WENT AWAY. I THEN TURNED THE SYSTEM BETWEEN FRESH AND RECIRCULATE SEVERAL TIMES AND THE SMALL WAS ALWAYS ON THE RECIRCULATE SIDE. I BELIEVE THERE IS SOMETHING VENTING INTO THE CABIN OF THE CAR BUT I CAN NOT FIND IT. THIS IS A SERIOUS SAFETY ISSUES AS SOMEONE COULD BECOME DIZZY OR FAINT FROM THE FUMES AND CRASH. *TR