Smoke alarms

In the past, before the inventions of smoke alarms, many people died in their homes
not because of flames, but because they inhaled lethal smoke while they were sleeping.
This is because most fires happen at night.

However, it is now possible for people to buy inexpensive smoke alarms
which they can fit themselves.
Like alarm clocks,they are loud enough to wake sleepers and give them enough time to escape.






The best place for a smoke alarms is at the top of stairs or in halls and corridors








Some smoke alarms are so sensitive that fumesfrom cooking can activate them,
so they should not be installed in or near kitchens.