What was found
BAD SMELL IN BACK OF PLANE DURING FLIGHT, MADE FLIGHT ATTENDANT FEEL VERY ILL. PERFORMED JC 26L00021001, COULD NOT INDUCE CABIN ODOR. RAN BOTH ENGS FOR OVER 1.5 HRS WITH DIFFERENT BLEED CONFIGURATIONS. INSPECTED APU & ENGS FOR EXTERNAL LEAKS, NONE FOUND.