What was found
ON DESCENT FOR FINAL EST 5000 FT SMELT FUMES. PUT ON MASK + DID PARTIAL QRH PRIOR TO LANDING. FLIGHT ATTENDANTS ALSO SMELT FUMES THROUGH CABIN PERSISTING UNTIL LANDING. HARD TO DESCRIBE ODORBUT HAD A CHEMICAL TYPE SMELL MAYBE CLOSED TO ACETONE. DIDN'T REALLY SMELL LIKE MUSTY ODOR OR EXHAUST.UPON INSPECTION FOUND OIL FILM ON #2 ENG NOSE CONE SPINNER AREA AND OIL CONTAMINTION ON APU INTAKE INTERNAL. RERF WL 2100-2005 FOR DECONTAMINATION. NO SMELLS NOTED. DUE TO OIL FOUND IN APU INLET, FWD APU TO MEL 49-10-01A. DISP APPVD. NO "M" PROC. MELZ+ PLACARD INSTALLED. C/W NOGO ODI 2172. (LP# 4883052)