As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECIRCULATION, SMOKE EICAS DURING DESCENT. RAN QRH AND MESSAGE WENT AWAY. SMELLED AN ELECTRICAL ODOR, WENT AWAY AFTER RECIRCULATION FAN TURNED OFF. ACCOMPLISHED SMOKE INPECTION IAW FIM 21-20-00-810, ISOLATED TO REC SYS WHEN ACTIVATED. ACCOMPLISHED FIM TASK 26-1000-810. FOUND RECIRCULATION FANS AT FAULT. DEACTIVATED LT AND RT RECIRCULATION FANS AND MFD ECS SYNOPTIC PAGE.