As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS AND PASSENGERS SMELLED ODOR DESCRIBED AS COMING FROM AFT CABIN VENTS. FLIGHT ATTENDANTS DESCRIBED ODOR AS 1) BURNING RUBBER OR 2) "MUSTY SOCKS" . ISOLATED / REMOVED ODOR IAW QRH ELIMINATION OF ODORS CHECKLIST - PACK 2 OFF ODOR DISSIPATED W/IN 5 MINUTES AT FL380