What was found
FLT 597/13 JFK-SEA DIVERTED TO ORD FOR ELECTRICAL ODOR AND SLIGHT HAZE IN AFT CABIN NEAR THE AFT GALLEY. FLT CREW DECLARED AN EMERGENCY AND LANDED OVERWEIGHT. DURING DESCENT FLT CREW TURNED OFF BOTH UTILITY BUSSES, ODOR AND HAZE BEGAN TO DISSIPATE. MTC COMPLETED OVERWEIGHT INSP AND ALSO INSPECTED SEVERAL THINGS WHICH MAY HAVE CAUSED THE PROBLEM BUT COULD NOT DUPLICATE THE PROBLEM.