Which of the following is NOT associated with carbon monoxide poisoning?

Carbon monoxide poisoning is characterized by specific clinical features due to the binding of carbon monoxide to hemoglobin, which reduces the blood's oxygen-carrying capacity. Symptoms commonly associated with carbon monoxide poisoning include cherry red lips, which result from the formation of carboxyhemoglobin, a complex of carbon monoxide and hemoglobin that imparts a red color. Headaches are a prevalent symptom, often resulting from hypoxia due to reduced oxygen delivery to the brain. Altered mental status is also a significant manifestation, as the brain is particularly sensitive to oxygen deprivation, leading to confusion or loss of consciousness.

In contrast, fever is not typically associated with carbon monoxide poisoning. While it may occur in other conditions—often those related to infection or inflammation—it does not directly result from exposure to carbon monoxide. Thus, recognizing the distinct symptoms associated with carbon monoxide exposure is crucial in diagnosing and managing this potentially life-threatening condition.