What was found
RIGHT BEFORE LANDING, GEAR SELECTED DOWN ON FINAL APPROACH, AFT F/A SMELLED BURNING AND SMOKE APPEARANCE IN CABIN NEAR CEILING, TURN OFF RECIRC AND LANDED. AIR SEEM TO BE IMPROVED, ELECTED TO TAXI TO GATE , UNABLE TO FIND SOURCE OF SMOKE. COMPLIED WITH DVI OF PASSENGER CABIN INTERIOR LIGHTS AND AIR CONDITIONING SYS, NO SMOKE NOTED AT THIS TIME.