As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR IN FWD OF AIRCRAFT CAUSED DIZZINESS TO FLT ATTENDANTS AND PILOTS, AND SOME FIRST CLASS PAX, SOURCE UNKNOWN. AN EMERGENCY WAS DECLARED AND THE FLIGHT DIVERTED WITHOUT FURTHER INCIDENT. THE AIRCRAFT WAS GROUNDED. MAINTENANCE PERFORMED ODOR INSPECTION IAW MCM 05-96-70, AND INSPECTIONS PER BOW. OPS CKS NORMAL.