As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1954, DCA-BOS. 'AIRBORNE FUME EVENT AFT GALLEY; NO MX-270 PROVIDED. COMPLIED WITH INFO NOTICE 2017-T015 SECTION A, ISOLATED TO FAULT TYPE 10 PER TSM 05-50-00-810-085-B. APU WAS REPLACED ON 6-13-23 DUE TO ODOR EVENTS. THE PREVIOUS EVENT TO THIS ON 7-16-23 WAS DETERMINED TO BE ENVIRONMENTALLY RELATED. (HEAVY RAIN)'