As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2136, CREW NOTICED UPON COCKPIT ENTRY UNUSUAL (BUT TOLERABLE) ODOR (MILDEW, SPOILED MILK) FLIGHT ATTENDANT NOTIFIED CREW DURING CLIMB, PASSENGER AND FLIGHT ATTENDANT WERE COMPLAINING OF PUNGENT NEARLY INTOLERABLE ODOR. MAINTENANCE INSPECTED COCKPIT AND CABIN FOR OBVIOUS SMELLS. GROUND RAN ENGINES FOR 10 MINUTES WITH AIRFLOW NO OBVIOUS SMELL OBSERVED. OK FOR CONTINUED SERVICE.