What was found
FLIGHT ATTENDANT NOTED ODD ODOR AND BECAME SLIGHTLY NAUSEOUS UPON TAKEOFF FROM LAS. NOTED TO LESSER EXTENT, SEVERAL TIMES IN CRUISE. RT PACK OVERTEMP AND TRIP ON GROUND AT ORD. CABIN HAD LT BLUE HAZE AND SLIGHT ODOR. PACK DID RESET AFTER COOLING. RESET PACK, AND OPS CHECKS NORMAL. CHECKED 8TH AND 13TH SADDLE COVERS, FOUND NO EVIDENCE OF OIL. UNABLE TO DUPLICATE FAULT.