If you don’t have carbon monoxide detectors right now, you need to really consider getting one. This odorless gas can kill quickly and without warning. I was lucky, and just ended up in the ER a while ago with CO poisoning, but I know it could have been much worse! Since then, I’ve added more CO alarms around my house.
If you need some new carbon monoxide alarms, you can pick up a Kidde battery-operated carbon monoxide alarm for only $11.87 from Amazon right now. Shipping is free on orders of $49 or more, or for Amazon Prime members.