As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNUSUAL ODOR PRESENT WITH PACKS ON AND RIGHT RECIRC FAN ON. RIGHT RECIRC FAN TURNED OFF, LEFT RECIRC FAN WORKS OK, NO ODOR, PREVIOUS HISTORY, REQUEST DEFERRAL MEL 2125A RT REC FAN WAS REPLACED FOR THE SAME ISSUE.. REMOVED AND REPLACED HEPA FILTER REF AMM 21-25-02/401 OPS CHECK GOOD CONFIRMED WITH FLIGHT CREW NO SMELL NOTED AFTER OPERATING PACKS AND/OR RECIRC FANS NO SMELL REMAINED OK FOR FLIGHT.