As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#671, BOS-CUN. 'FA REPORT ODOR ON APPROACH INTO CUN WITH ENGINE AT IDLE, DESCENDING 5000 TO 3000 ODOR WAS A MILD LEVEL 1 CHEMICAL SMELL DETECTED MID CABIN FORWARD TO GALLEY ODOR LASTED 5 MINUTES BEGINNING AT 5000 AND PERSISTING THRU LANDING ODOR DISSIPATED AFTER LANDING; ACCOMPLISHED WITH INFORMATION ODOR ON APPROACH 20-17-PERFORMED TASK IAW TSM 05-50-00-0110-085-B TO PANEL TAPE 10 AC OK FOR SERVICE.'