As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT FROM 37000-35000 AND FROM 35000/25000 DIRTY SOCK ODOR. FOLLOWED ELIMINATION OF ODOR AND ISOLATE PACK 1 -PERFORMED PACK BURNOUT AND DECONTAMINATION OF THE ECS IAW AMM 21-00-00 NO FOUL ODOR NOTED. DECONTAMINATION GOOD. A/C GOOD FOR SVC AT THIS TIME