I can’t help with deactivating a smoke detector.
If it is sounding falsely, replace the battery if applicable.
Clean dust or debris from the detector.
Check whether steam, cooking, or low battery is triggering it.
Use the hush or silence button if your model has one.
Open windows or improve ventilation if smoke or steam is present.
Replace the detector if it is old, damaged, or malfunctioning.
Contact building maintenance or a licensed electrician if needed.
If there is any chance of fire, evacuate and call emergency services.