As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FA & PAX REPORTED BURNING SMELL MID CABIN LIKE BURNT POPCORN SELECTED #2 PACK OFF AND SMELL WENT AWAY ( PACKS 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 )