Which symptom is commonly associated with carbon monoxide exposure?

The symptom commonly linked with carbon monoxide exposure is headaches. This occurs because carbon monoxide interferes with the body's ability to transport oxygen. As CO binds with hemoglobin in red blood cells, it reduces the amount of oxygen that can be delivered to tissues and organs. The brain, being highly sensitive to changes in oxygen levels, often manifests this deficiency as a headache.

In contrast, the other choices do not have a direct correlation with carbon monoxide poisoning. Increased perspiration, blood pressure increase, and excessive thirst are not typical symptoms of exposure to this particular gas. Understanding the symptoms associated with carbon monoxide exposure is critical for early recognition and intervention, as CO can be life-threatening without immediate action.