Do you have a CO2 detector

A CO2 detector is mandatory on a new build if you have a attached garage or a fuel burning appliance such as a woodstove/fireplace, gas furnace, or other gas appliances. 

 If you have a older house with hard wired smoke detectors, you can install a combo CO2/smoke detector in its place. 

Remember CO2 is a oderless, tasteless. IT IS OFTEN NOT DETECTED UNTIL THERE ARE SYMPTOMS. It does kill

Make sure you have some type of a CO2 dector.