But, I was so thankful for that sensitive smoke detector when we had the fire in our laundry room!!!!

FORBES: Are You Prepared for a Disaster?

If hydrogen were used as a crack detector (it is not because of the fire hazard), it would escape four times faster.

ECONOMIST: Tech.view

It is believed there was no working carbon monoxide detector in the static caravan, meaning the three would have been unconscious "within minutes", Cornwall Fire and Rescue Service said.

BBC: Carbon monoxide deaths: Inquests open