As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"ABNORMAL ODOR REPORTED BY F/A -FOLLOWED TSM 05-50-00 FOR CAUSE OF ODOR OR SMOKE , CHECKED ENGINES AND APU FOR SIGNS OF LEAKAGES REF TSM 71-00-00 AND 49-00-00 NONE NOTED . ENGINES RAN BY FLT CREW ISOLATING BLEEDS WHILE OPERATING BOTH PACKS INDIVIDUALLY . A FAINT SCENT WAS FOUND WHILE OPERATING THE LEFT PACK , SEE LOG PAGE 2403392-2 FOR DEFERRAL "