As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH THE PILOT SMELLED SMOKE AND AFTER LANDING THE SMELL GREW STRONGER. AIRPLANE TAXIED BACK TO THE GATE WITHOUT INCIDENT. REMOVED AND REPLACED GASPER FAN. OPS CHECK GOOD, NO HELP. THE CABIN AUGMENTATION FAN WAS FOUND TO BE INOP. REMOVED AND REPLACED THE CABIN AUGMENTATION FAN PER AMM 21-22-11. OPS AND LEAK CHECK GOOD. NO SMELL REPORTED. AIRCRAFT RETURNED TO SERVICE.