As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DESCENDING THROUGH 4000FT FLIGHT ATTND CALLED THE FLIGHT DECK TO REPORT STRONG ODER OF DIRTY SOCKS. WE RAN QRM PROCEED AND SHUT DOWN PACK 2 ( PACKS A320 WITH MOD 31283/MP P7125 (FWC H2-F1 STND) AND WITH MOD. 30626/MP K6443 (ENHANCED ECS) - FAULT CAUTIONS ASSOCIATED WITH OPERATIVE SIDE NOT DISPLAYED )--