As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CHEMICAL SMELL DURING TAXI IN AFTER SHUTTING DOWN ENGINE 2 REMOVED AND REPLACED BOTH AIR CONDITION HEPA FILTERS IN REF WITH AMM 21-25-01. PERFORMED ENGINE BURNOUT PROCEDURE IN REF WITH AMM 71-00-00. NO CHEMICAL SMELL NOTED. CHECKED ENTIRE LENGTH OF CABIN AND FLIGHT DECK, ALL SMELLS NORMAL.