Smoke detector in the kitchen fire even when steam and vaporized fat!

Have a smoke detector in the living room and one in the kitchen attached. The living room has never been triggered. The in the kitchen several times. Mind you, the smoke detector does not depend directly across the hotplate but a few yards, but he sometimes solves the breakfast eggs cooking (water vapor) as well as baked potatoes or steak roast! I find this unacceptable for a smoke detector. That's why the poor rating. Two stars there, because he approaches I think even in smoke (at least I hope so) and because it's really loud, you get almost a sudden hearing loss if you are in triggering near.