There should probably be a vent over the stove/oven in the kitchen (like by Law) so, uhh open the vent and turn on the fan. Opening a window helps, closing the kitchen door helps, moving your desk as far away from the kitchen as possible.
I also used to live in a studio apartment, but the living room was still like 20ft wide or so and my desk was on the wall farthest from the kitchen door, but I also had a vent and a large window in the kitchen.
There's always moisture in the air, it really shouldn't be a big problem unless the computer is like in the kitchen within a few feet of the stove.