1 . because when you go to sleep you can not smell
2. smoke alarms can save your life because the fire can get very big in a very shot time .
2. smoke alarms can save your life because the fire can get very big in a very shot time .
3 . They are cheap and they protect your expensive house.
So this is why every house should have a smoke alarm.
So this is why every house should have a smoke alarm.