As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE SMELLED ELECTRICAL FUMES IN COCKPIT AND OBSERVED SMOKE AROUND FLOOR BEHIND F/O SEAT. FOLLOWED COM LIST TO "RECIRC FANS OFF" AND SMOKE DISSIPATED. DID NOT RE-OCCUR FOR REMAINDER OF FLIGHT WITH CIRC FANS OFF. FLIGHT CONTINUED TO MEM AND LANDED WITHOUT INCIDENT. CHECKED RECIRC FANS WITH FULL LOAD FOR 3 HRS. CHECKED WIRING UNDER F/O SEAT. NO ABNORMALITIES FOUND. A/C OK FOR SERVICE.