Filed under: Living Rooms , Bedrooms , Small Spaces , Essential Skills , Know-How , Living Spaces Getty Images Feeling headache-y, nauseous, tired and confused? You might suspect a case of the flu. But it could also be the effects of carbon monoxide poisoning. Carbon monoxide (CO) is an invisible, odorless fume that can be impossible to detect, which is why it’s earned the ominous nickname “the silent...