What was found
STRONG CABIN SMELL ON AFT FORCING PAX TO COVER THEIR NOSE @ 3000FT TURN PACK 2 OFFF SEEMD TO CLEAR UP. ( 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) )-PERFORMED DECONTAMINATION OF THE ECS IAW AMM 21-00-00, NO ODORS NOTED. INSPECTED IAW AMM 05-50-00 AND FOUND NO EVIDENCE OF OIL CONTAMINATION. THIS CLEARS DMI # 3457781-1, MOC NOTIFIED, PLACARD REMOVED.