As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMELL COMING FROM AIR CONDITIONING PACKS ON APU AIR, LEAK CHECKED APU AND VERIFIED ACM SERVICE LEVELS. INSPECTED COALESCER BAGS AND FOUND OK FOR CONTINUED SERVICE. FOUND NO DEFECTS WITH APU OR AIR CONDITIONING SYSTEM. REF AMM 49-10-00 AND 21-10-00.