As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT, PAX REPORTED "BAD" ODOR IN THE CABIN. SUBSEQUENTLY, THE CREW REPORTED A SMOKE HAZE IN THE CABIN. ACFT LANDED SAFELY AT ITS DESTINATION. MX ISOLATED THE PROBLEM TO THE PAX CABIN PACK. MX FOUND METALLIC PARTICLES IN THE COALESCER SOCK INDICATING AN ACM FAILURE. THE ACM WAS REPLACED.