As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 739 - EN ROUTE LGA-MSY, A SMOKE ODOR WAS PRESENT IN THE COCKPIT AND CABIN DURING DESCENT. NO VISIBLE SMOKE WAS NOTICED AND NO SOURCE WAS IDENTIFIED. MAINTENANCE RESET THE CABIN ZONE CONTROLLER AND OPERATIONALLY CHECKED OK. AIRCRAFT WAS INSPECTED, BUT THE ODOR WAS NOT DUPLICATED IN EITHER THE COCKPIT OR CABIN. (M)