As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1793, JFK-SJO. FA #3 AND 1 SMELT STRONG ODOR OF DIRTY SOCK SMELL IN THE AFT CABIN. #3 VOMITED WITH HEADACHE. I WAS TOLD OF THIS AFTER LANDING THROUGH 10000 AND #2 SMELT IT. ( APU BLEED AIR SUPPLY SYSTEM ); COMPLIED WITH INFORMATION NOTICE 2017-T015F SECTION A. AIRCRAFT OK FOR SERVICE. OBSERVED APU BLEED FOR TWO HOURS NO ODOR IN CABIN. MDDR CLEARED. MX 4 UPDATED. PLACARD REMOVED