Take it apart: unscrew the bottom and top to remove the clear tank. Then take off the top (nipple with tiny hole). Unscrew the coil tower from the base. Rinse it all off and blow through the pieces to dry them. Then re-assemble. Don't push the nipple cap down hard. Let the top metal part with the drip tip push it down to create a good seal. Don't fill above the bottom edge of the nipple cap or it will flood again. Good luck!