As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ODOR AT DISPATCH. TOLD WOULD DISSIPATE, ODOR PERSISTANT. EVEN AFTER 1+15 OF FLIGHT W-O APU AND PACKSON HI FLOW. SEVERAL PAX COMPLAINED OF NAUSEA. RECIRC FILTERS REPLACED AND RAN APU WITH BLEEDS AND PAC ON FOR APPROX 8 HRS. NO FURTHER ODOR NOTED.