What was found
FA IS AFT REPORTED A SMELL OF DIRTY CLOTHS DURING TAKE OFF AND THEN GOT SICK. TWO OTHER FA'S GET SICK BEFORE FUME EVENT PROCEDURE WAS APPLYED . TAKE OFF POWER AND CLIMB POWER THROUGH RAIN. -PER TSM 05-50-00-810-831-A, THE CAUSE OF THE ODOR WAS FOUND TO BE COMING FROM THE APU. PERFORMED INSPECTION OF APU AND FOUND EVIDENCE OF DE-ICING FLUID NEAR APU FLAP. CLEANED THE AREA AND PERFORMED A PACK BURNOUT. NO MORE ODOR AT THIS TIME. A/C OK FOR SERVICE.