As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON BASE LEG TO FINAL APPROACH MOMENTARY DIRTY SUCK SMELL FOR A FEW SECONDS. CABIN CREW DID NOT SMELL IT FOR MORE THAN ONE SECOND. ( 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.