Install fireproof insulation
Some types of fireproof insulation materials are glass, wool, fiberglass and polymers. They are not really fireproof, but rather fire resistant. That means they will burn if the heat gets hot enough. Still, fireproof insulation could save someone's life, so I think it's a good idea.
Normal insulation really doesn't burn very well, but when the heat of a house fire gets hot, insulation will combust along with everything else. There have been some great improvements in the types of insulation that can make a big difference in the time that it takes the walls to catch fire.
The new rock wool insulation still has a high R-value, but the temperature for it to combust is so much higher than conventional insulation.
It might make the difference of several minutes in a house fire though. That could make all the difference in the world.
It is sometimes used in attics and walls of residential dwellings, and often used in commercial buildings, but the effectiveness is still being determined.
Fiberglass can be useful in temperatures up to 212 degrees. Glass wool can be used for temperatures between 212 degrees up to 1,220 degrees. Many of the polymers accept temperatures up to 2,220 degrees.
There are other ways to make sure your home is as safe as it can be to prevent home fires. Fire blocking in the walls is a code in most states because it slows the flames from reaching the upper floors or roof through the walls.
Be sure that your electrical wiring is up to date. If your home is 25 years or older, you may want to have it inspected to see if the electrical requirements are being met by the breakers and wiring circuitry.
If you have a fireplace or stove, check the chimney and vents to make sure they haven't eroded with time.