As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS AND FIRST CLASS PASSENGERS REPORT SMELL OF SMOKE WHEN A/C PACKS ARE TURNED OFF. ACCOMPLISHED JOB CARD 03L00021001, 737 TROUBLESHOOT CABIN ODOR. FOUND RIGHT PACK AIR CYCLE MACHINE SEIZED AND LEAKING OIL. REPLACED RIGHT PACK AIR CYCLE MACHINE IAW B737-400 AMM 21-51-11-401.