As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURIING TAXI-OUT, FLIGHT ATTENDANT SMELLED FUMES (UN-IDENTIFIED) AND NOTIFIED FLIGHT CREW. FLIGHT CREW ELECTED TO RETURN TO GATE FOR INVESTIGATION. AIRCRAFT RETURNED TO GATE WITHOUT INCIDENT. MAINTENANCE PERSONNEL INSPECTED AIRCRAFT OF EVIDENCE OF ELECTRICAL FIRE AND FLUID CONTAMINATION IN CABIN. NO EVIDENCE OF EITHER WAS NOTED. NO EVIDENCE OF FUMES WAS NOTED BY MAINTENANCE PERSONNEL. AIRCRAFT RETURNED TO SERVICE. (X)