As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SGF FLT 5946 THE CREW REPORTED THE CABIN FILLED WITH HAZE IN FLIGHT AT FL350. HAZE IN FLIGHT DECK AND CABIN. ALSO REPORTED AN EXHAUST ODOR. PACK NR 1 WAS SELECTED OFF. THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NR 1 AIR CYCLE MACHINE. OPERATIONAL CHECKS WERE GOOD.