No, a chirping smoke alarm is usually a sign of an issue with the power supply of the unit. This is easily solved by replacing the battery to stop the smoke alarm from beeping. If the chirp continues, review the owner’s manual to determine the cause. These chirps are short and not as loud as the beeping of the alarm itself. If you can’t tell the difference, it’s best to treat it like an activated alarm until you find the cause. 

Ensure proper ventilation, fix leaks, and schedule regular pest inspections to protect your property.

You can fireproof an existing door to some extent, but it's better to remove the old door and replace it with a fire-rated model. Anything dealing with extreme heat needs rigorous testing and a door you DIY fireproof will not undergo the same safety measures as a premade one. Consider a door with a rating of at least 30 minutes or more in residential areas.

According to the National Fire Prevention Association (NFPA), the leading cause of house fires is cooking accidents, followed by fires started by heating equipment. Electrical issues are the third most common cause of house fires. The best way to keep your home protected is to use caution when cooking and never leave a stove or oven unattended while in use. You can also keep up with chimney cleaning and avoid using space heaters to reduce the risk.