A deadly gas that you can't see, or smell: carbon monoxide.
it killed four people this week in a North Little Rock home after police believe they had stolen a generator and were using it indoors.
Firefighters say generators should never be used indoors.
This means not inside a house, basement, or even in a detached garage. However, generators are far from the only thing that can lead to carbon monoxide poisoning. The North Little Rock Fire Department said cooking equipment being left on, your vehicle running, or even your heating if it's gas-powered.
One way people can get poisoned is by leaving their car running in the garage to warm it up on a cold morning. This, NLRFD said, can prove to be deadly for two reasons. First, is gas poisoning. And, secondly, if the gas doesn't kill you, it can affect your brain function when you start driving, similar to drinking alcohol and getting behind the wheel.