What was found
CLIMBING THROUGH 6000' FA'S CALLED TO REPORT FUMES ON CABIN AND FEELING LIGHT HEADACHE. FO SAID HE NOTICED ODOR CLIMBING THROUGH 3000' FOR ABOUT 15 SECONDS THAT QUICKLY DISSIPATED. A/C HAD BEEN DEICED AT GATE PRIOR TO CREW ARRIVAL. FO NOTED PUDDLE OF DEICE FLUID IN INLETS ON PRE FLIGHT. WOULD CONSIDER THIS A LEVEL 1 AIR QUALITY EVENT. GROUNDED - YES. PERFORMED FIM 05-51 TASKS 814 REMOVED AND REPLACED RECIRCULATION AIR FILTER AMM 21-25-01 OPS CHECKED GOOD.