As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOXIOUS ODOR IN CABIN AREA ACCOMPANIED BY LOUD NOISE IN THE OVERHEAD AREA AT ROW 11. COORDINATED WITH MCC VIA SATCOM. ADVISED PULLING PASS AIR OUTLET FAN CTRL C/B N8. ODOR DISSIPATED AND NOISE SILENCED. VERIFIED PASS AIR OUTLET FAN BAD/NOISY. REPLACED SAME.