As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT DURING CRUISE STRONG SULFUR ACIDIC SMELL. EYES AND THROAT IRRITATION. DID NOT GET TO ISOLATE ANY PACKS OR ENG BLEEDS AND NO APU ON TAXI IN. (FLIGHT 5819 - FILED CLOSED) PERFORMED FIM TASK 21-20-00-810-803-A AND FIM TASK 21-20-00-810-801-A. NO DEFECTS FOUND.