What was found
F/A'S REPORTED DIRTY SOCKS SMELL IN CABIN DESCENDING THRU FL180. TURNED OFF PACK 2 PER COM 3.226.1, CALLED F/A'S BACK, THEY REPORTED NO MORE FUMES. AFTER PARKING F/A REPORTED A PASSENGER TOOK OFF THEIR SHOES-RAN #1 AND #2 PACKS INDIVIDUALLY COULD NOT DUPLICATE DIRTY SOCKS SMELL. UTILIZE AERO TRACER THROUGHOUT CABIN WITH NEGATIVE RESULTS, FOLLOW TSM 05-50-00, NO DEFECTS NOTED. RETURN AIRCRAFT TO SERVICE