As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT INTERMITTENT SMELL OF SMOKE. AFT OVERHEAD LIGHT TURNED OFF SMELL DISSIPATED. INSPECTED AIRCRAFT NO DISCREPANCIES NOTED. OPENED VENTS IN LIGHT/VENT ASSEMBLY ALLOWING AIR TO CIRCULATE. (INFREQUENTLY USED INCANDESCENT LIGHT) SMELL DID NOT RETURN. NVIS FILTER REMOVED AND RE-INSTALLED WITH SPECIFIED ADHESIVE.