What was found
AT FL350 F/AS CALLED AND SMELLED AN ODOR LIKE MUSTY DIRTY SOCKS, ELECTRICAL, NAIL POLISH SWEET ODOR FROM ROW 14 AFT. RAN ELIMINATION OF ODOR IN CABIN /COCKPIT CHECKLIST IAW VOL 2. DECLARED EMERGENCY, LANDED SAFELY. MAINTENANCE PERFORMED TSM 05-50-00-810-831-A IAW COS (CAUSE OF SMELL) NR 2 PACK INDICATED HIGHEST PROBABLE SOURCE. PERFORMED TSM 21-00-00-810-802 COULD NOT DUPLICATE ODOR. MAINTENANCE REQUESTED OPS CHECK FLIGHT. MAINTENANCE PERFORMED PERIODIC CHECK IAW FFT-M05100-M0-1. MAINTENANCE ALSO SERVICED THE CREW O2 IAW AMM 35-11-41 PB 401. OPS CHECK FLIGHT COMPLIED WITH AND FOUND SATISFACTORY. RETURNED TO SERVICE.