As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY DECLARED DURING DESCENT, DUE TO FAS SMELLED SMOKE IN THE CABIN. NO SMOKE DETECTED IN THE COCKPIT. THE SMOKE ODOR STARTED TO DISSIPATE. MAINTENANCE RAN THE ENGINES AND ISOLATED PACKS. PERFORMED FIM AND FOUND THE LT RECIRCULATION FAN CIRCUIT BREAKER TRIPPED. REPLACED LEFT RECIRCULATION FAN AND BOTH FILTERS. OPS CHECKED GOOD, AIRCRAFT RETURNED TO SERVICE.