My kid left a pot on the stove then went to her room while she waited for her food to cook, Well she forgot about it and came out of her room to find my house filled with smoke!!
The pot got so hot the heavy metal plate under it melted off!
I checked the smoke alarm, pushed the test button and the siren worked, Just like I do twice a year, then lit some paper and held it under it and it dont work!!
WTF??? Pulled it down and it was 2006 when it was made so I went downstairs and made smoke with paper and that one dont work but the test button works.
I guess what I am saying is to really check your smoke alarms for function.
That test button doesnt really check for operation.
Even though I do all the "tests" to insure my house was protected it really wasnt.
Looking back I remember that thing would go off whenever I cooked and made alot of just steam, or if there was something on an element and it smoked.
I guess these things dont last forever, So to make sure go make some smoke and see if yours works and detects smoke.
The smoke you make is up to you!