As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 2500-3000 FEET ON APPROACH, F/A REPORTED SMOKE SMELL IN CABIN. CAPTAIN DECLARED AN EMERGENCY. THE TOWER REPORTED THAT THE A/C WAS DESCENDING THROUGH A LAYER OF SMOKE. F/A CONTINUED TO SMELL SMOKE WITH NO VISUAL SMOKE IN CABIN. A/C WAS INSPECTED AT END OF RUNWAY AND CLEARED TO GATE WITH NO FURTHER INCIDENT.