As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STL - INFLIGHT ORD-DFW. CREW REPORTED BURNING ODOR ASSOCIATED WITH ELECTRICAL COMPONENTS. FLIGHT ATTENDANTS TURNED OFF POWER TO POWER PORTS AND ODOR DISSIPATED THROUGHOUT CABIN. EMERGENCY DECLARED FLIGHT DIVERTED STL LANDED WITHOUT INCIDENT. REPLACED BAD POWER PORT POWER SUPPLY AT ROW 8DF. SYSTEM GROUND CHECK NORMAL OPERATION.