As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED LEFT PACK EMITS CHEMICAL ODOR (STRONG CLEANING SOLVENT) CAUSES BURNING SENSATION IN THE EYES. REPLACED LEFT PACK WATER SEPARATOR, COALESER BAG. RAN LEFT AND RIGHT PACKS FOR OVER ONE HOUR. NO ODORS NOTED. CHECKS GOOD PER MM 21-55-03.