Install Carbon monoxide detector (I put one in) $1005.

Some of the companies manufacturing them are even designing energy efficient / carbon negative homes to appeal to a generation that is increasingly trying to reduce its carbon footprint.

I assume this is a joke, but a lot of "hauntings" are the effects of carbon monoxide posioning.

The house has settled and the foundation is starting to bow although the owners just recently paid to have it reinforced with carbon fiber straps?

The most common questions are GFCI receptacles, number of receptacles in a room, electrical panel disconnect, smoke and carbon monoxide detectors, insulation and permit questions.The home inspection is an advisory inspection and is a negotiating tool.  

When you completely burn any hydrocarbon - natural gas, propane, or anything else - you always get carbon dioxide and water vapor.Edit: information on chimney

The inspector says well in the future, If I sell the property, someone might be able to hook up appliances to the chimney and cause carbon monoxide issues.Thanks,Brandon

CO is carbon monoxide and deadly in the right doses.

Carbon detector if there are gas appliances in the building.Your area might be different but this is the standard requirement.Good Luck.

So the ideal comp is a carbon copy of the subject, located next door, sold yesterday to a typical buyer with typical exposure time and no sales concessions, etc.Of course, in the real world, that is easier said than done!