As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT INTO RSW APRROXIMATELY 14000 FEET FA REPORTED SWEATY SOCK FROM REAR OF A/C MOVING FOWARD. SELECTED PACK 2 SMELL SEEMED TO DISSIPATE. ( PACKS - A320 WITH MOD. 30626/MP K6443 (ENHANCED ECS) OR A321 WITH MOD. 157080/MP K17996 (PACK FLOW SELECTOR) AND WITH MOD. 30626/MP K6443 (ENHANCED ECS) )--