As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT # 192, TPA-BOS. LEVEL 2 ODOR EVENT DETECTED BY PREVIOUS FLIGHT CREW AND CURRENTLY DETECTED IN CABIN AND COCKPIT ( APU BLEED VALVE ) ; PER INFO NOTICE 2017-T015F, APPLIED MEL 36-12-02-A CAT C PER MCC. APU BLEED/LOAD CONTROL VALVE SECURED IN THE CLOSED POSITION IAW AMM 49-51-00. POSITION INDICATOR ON VALVE BODY SHOWS CLOSED POSITION. (SUPPLEMENTAL INFORMATION TO FOLLOW)