As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - INFLIGHT STL TO LAX. CREW REPORTED STRONG ELECTRICAL SMELL IN AFT CABIN. FLIGHT ATTENDANT REPORTED BURNING EYES AND PASSENGERS GETTING NAUSEOUS. LANDED DEN WITHOUT INCIDENT. FOUND OVERHEAD LIGHT AT SEAT 29 FAULTED AND BALLAST GIVING OFF ELECTRICAL SMELL. REPLACED BALLAST AND SHORT HARNESS. SYSTEM GROUND CHECKED NORMAL OPERATION.