Agree with VillageTinker. You identify as being in Richmond so it's a recent build.
If your microwave is on an outside wall, it probably intended to vent outside and there will be an exterior vent on the outside wall.
You can rule out the smoke detector by swapping it with another in the house.
Fyi - Detectors in newer homes have smoke/carbon monoxide detectors in some locations.
Last edited by Altavia; 12-20-2023 at 02:03 PM.
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