I set off one fire alarm once with a single, well placed MTL puff. It was right above the thermostat, which I was investigating.
The thing that burned me up a bit was like, we have 11ty jillion smoke alarms in our house (FHA thing) and NONE of them worked during the fire. Only the one original to the house worked.
It's potentially possible the husband reported that and the smoke alarms were changed. But if not, I was a bit miffed about it.
I just change out ALL the alarms when I get my first "Beep-- beeep---beep," I figure like why not? The batteries are all about the same age.
I think we test ours periodically now but a housefire will like, do that to you. We never really fully settled back in.
Anna