As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - REPORTED SMOKE AND SMELL IN THE CABIN. RETURNED TO DFW AND LANDED WITHOUT INCIDENT. FOUND FORWARD UPPER SIDEWALL LIGHT LAMP SOCKET AT SEAT 6AB DAMAGED. REPLACED LAMP SOCKET FOR FORWARD UPPER SIDEWALL LIGHT LAMP HOLDER AT SEAT 6AB. SYSTEM GROUND CHECKED NORMAL OPERATION.