As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLIGHT ATTENDANT REPORTED SMELLING SMOKE IN CABIN. PILOT TURNED OFF RECIRCULATION FAN AND SMOKE DISSIPATED. EMERGENCY DECLARED FLIGHT LANDED DFW WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RECIRCULATION FAN. SYSTEM GROUND CHECK NORMAL OPERATION.