As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MID TO AFT CABIN HAS MILD TO STRONG FOUL SMELL. REPLACE RECIRC AIR FILTERS REF IPC EQUIPMENT INSTL-CAB. AIR RECIRCULATION REFERENCE: 21-25-01-02. REMOVED AND REPLACED BOTH RECIRC AIR FILTERS PER AMM 21-25-02. PERFORMED OPS CHECK, REF AMM 21-25-02. OPS CHECK GOOD. OKAY TO CONTINUE.