Bletchleyite
Veteran Member
Smoke detectors seem to differ in sensitivity. When our 158 toilets were fitted with them if you pressed the test button they would work,but you could smell somebody smoking in the toilet and the alarm remained silent. Same on IETs,you can smell the cigarette smoke coming from the toilet but no alarm! Overcook the steak in the galley and all hell breaks loose .
Smoke detectors are (were) generally designed not to pick up cigarette smoke, because they have (had) to be usable in places where smoking is allowed. The smoke from burnt food is far, far thicker.
I'm surprised the galley one isn't a heat detector (which I think detect sharp, large and sustained changes in temperature as would occur with a fire - certainly, opening the oven door doesn't set mine off), as these are the norm in kitchens.