Scotland's recent legislation on domestic detectors requires a heat detector in kitchens.
I used to live in a house where the detector in the hall was too near the kitchen so it went off without much provocation. It was great for grilling meat. Put the bacon/chicken/chops under the grill, leave the door open and retire to the living room to watch telly. When the smoke alarm went off it was time to turn the meat over. The meat wasn't burnt - it was just right. I think it was fumes from the fat that set the detector off because it was always a bit late if the grill pan was clean.