What was found
VERY STRONG, VERY PUNGENT SMELL ON TAKEOFF. OPENED RAM AIR TO HELP, VERY LITTLE HELP. CREW HAD BURNING NOSES, WATERY EYES AND FELT SICK. DIVERTED TO LAS VEGAS FOR MAINTENANCE. MAINTENANCE DEPARTMENT PERSONNEL INSPECT THE AIRCRAFT AND PERFORMED A BURNOUT OF THE AIR CONDITIONING SYSTEM IAW AMM 21-20-02. REMOVED AND REPLACED THE AIR CONDITIONING SYSTEM COALESCER BAGS, NO FURTHER DEFECTS NOTED. AIRCRAFT RETURN TO SERVICE.