In alt.home.repair, on Sun, 01 Jan 2017 02:41:49 -0500, micky
wrote:


Put the thing in the refrigerator and you will barely hear it even when
you're in the kitchen. It will probably stop too, because it's shielded
from what ever smoke or CO was causing it to go off. . Then take it
out in the morning, take it outside and see if it starts up again. If it
doesn't it's probably good (because the batteries will sound much longer
than one night) Then take it to the same location it was in and see if
it goes off then. If it does you have a real problem.

This paragraph refers to when one is cooking and he's burning the grease
in the oven, or I suppose on the stove, and he knows the origin of the
smoke.