As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE AT 34000, FAS CALLED AND REPORTED SMELLIN BACK OF CABIN. ALSO DIZZY & LIGHTHEADED. PACK 2 SELECTED OFF IAW COM2 3.226.1 ELIM OF ODOR/FUMES. SMELL DISSIPATED SOON AFTER.-PERFORMED DECOMTAMINATION OF PACK 2 IAW AMM 21-00-00. NO EVIDENCE OF SMELL A/C OK FOR SERVICE