Probably Being Oversensitive.

https://news.sky.com/story/japan-accuses-chinese-fighter-of-locking-fire-control-radar-on-its-jets-13480416

That's certainly the issue with my smoke alarm. 

Water boiling in a metal pan sets it off through a door less than 1cm ajar. I know it's the steam heating up the grease trapped in the stove. However that's still far, far too sensitive. Although Yom Kippur isn't the reason why it certainly provides a memorable date to remember when I deep cleaned the kitchen. Getting the stove as clean as it's possible to get it without it being factory fresh only made the smoke alarm worse.

Before getting a new one and, possibly, finding a better location for it I want to open it up and check on the strength of radioactive source, the sensitivity of the receptor and the distance between them.

In the meantime I've taken to disconnecting the battery while cooking.

The one time I forget to reconnect it. That'll be the time there's a fire.

Obviously I'm directing these questions to the people who made the thing. Not the Brigade that fitted it up there.

https://www.facebook.com/UKgovernment/videos/fire-kills-get-covered/1241217981235164/