Every home should have smoke and carbon monoxide alarms and detectors. They are life savers. Most contemporary furniture and furnishings are made from synthetic materials which burn faster. Smoke and fire detectors give you additional time to escape in the event of an emergency.
BRK Smoke and Carbon Monoxide Alarm

BRK smoke alarms are available in a variety of models. Additionally, they have a technology to help distinguish between nuisance cooking alarms and a real fire emergency. BRK hardwired smoke and carbon monoxide alarm has a 10-year battery backup that allows it to function in the event of a power outage. They are available at hardware stores.
Eton Carbon Monoxide Alarm

Common potential sources of Carbon Monoxide:
Gas or wood burning fierplace
Incorrectly installed gas stove or hood.
Cracked or loose boiler blue.
Corroded or disconnected heater vent pipe.
Portable gas or kerosene heaters.
Poorly mainained gas grill.
Clogged chimney.
Car/motorcycle left running in an attached garage.
Operating a barbeque indoors or in a garage.