TL* THE CONTACT OWNS A 2011 CHEVROLET AVEO. THE CONTACT WAS DRIVING APPROXIMATE 30 MPH WITH THE AIR CONDITIONER ACTIVATED WHEN A STRONG ODOR OF SULFUR EMITTED THROUGH THE AIR VENTS. WHILE PARKING, THE BRAKE PEDAL TRAVELED TO THE FLOOR AND A BURNING SMELL CIRCULATED INSIDE OF THE VEHICLE. THERE WAS NO WARNING INDICATORS ILLUMINATED ON THE INSTRUMENT PANEL. THE CONTACT INSPECTED UNDERNEATH THE HOOD AND THERE WAS NO SMOKE OR FLAMES VISIBLE; HOWEVER THE ENTIRE HOOD COMPARTMENT OVERHEATED. ALSO, THE HOOD WAS EXTREMELY HOT TO THE TOUCH. THE VEHICLE WAS IN THE PROCESS OF BEING TOWED TO AN AUTHORIZED DEALER FOR DIAGNOSIS. THE MANUFACTURER WAS NOT NOTIFIED OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 3,180.