I live in a small flat that consists of five rooms arranged around a central hallway. We have a combination smoke alarm/carbon monoxide detector in our bedroom because that's where the boiler is. If anyone grills anything, anything at all, the smoke detector goes off. We have to close the bedroom door and stuff a towel under the gap that is created by the sloping floor, close the kitchen door and then grill things. It is deafening when it goes off. I'm trying to imagine the cacophony that additional linked smoke detectors in the kitchen itself, the hallway and the living room would create if they were all linked and someone fancied a bacon sarnie.