As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CATEGORY A. IMMEDIATELY AFTER T/O FA 1&2 REPORTED SOUR MILK SMELL IN FWD & AFT GALLEY SMELL WENT AWAY AFTER LEVEL OFF AT FL 250 SMELL CAME BACK ONCE WE LEVELED OFF AT 12000 FT IN DECENT. "TRANSFERRED TO NRWC 059-ORD-00927"-C/A-REMOVED AND REPLACED SUMP SEAL VALVE IAW EMB 175 LMM 75-00-00. COMPLIED WITH WORK CARD EA72-00-00-014 "ENGINE RECOVERY/COMPRESSOR WASH - CLEANING". PERFORMED GE FIM TASK 72-00-00-810-021 WITH NO SMELL NOTED IN COCKPIT OR CABIN