Which of the following is NOT a symptom of nicotine poisoning?

Calmness is not a symptom of nicotine poisoning. When someone experiences nicotine poisoning, they typically show signs of increased agitation or stimulation due to the toxic effects of nicotine on the nervous system. Symptoms of nicotine poisoning include nausea, vomiting, and diarrhea, which result from the body reacting to the toxic substance and trying to eliminate it. The presence of these physical responses indicates a state of distress rather than calmness. Nicotine affects the central nervous system, often leading to heightened heart rates and anxiety instead of a tranquil state. Understanding this distinction is important when assessing the effects of nicotine and recognizing the signs of poisoning.