Yesterday while cooking I set off the smoke detector, no I did not burn anything. They go off when I cook over a high heat. And yesterday once they started going off they would not stop. I ended up having to disconnect them all (they are hard wired with an interconnect) and I replaced them this morning. Aaaaaaaand let me tell you, I had a sleepless night last night knowing there were no detectors installed.
https://www.southernliving.com/how-often-should-you-replace-smoke-detectors-8774122
As I mentioned in another comment, I almost died in a house fire. I had an aerosol can in a pile of clothes that caught fire from a heater, that can exploded and woke me. Otherwise I would have slept through the fire.
Your comment hits me really hard (I am sure not as hard as being on scene where they did not have detectors). But reading some of the dismissive comments I was starting to think I was over reacting, you assured me I was not.