Which compound of carbon is a treacherous poison ?

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for a compound of carbon that is considered a treacherous poison.

2. **Recall Carbon Compounds**: We need to think about the various compounds of carbon and their properties, especially focusing on their toxicity.

3. **Identify the Poisonous Compound**: Among the carbon compounds, carbon monoxide (CO) is well-known for its poisonous effects.

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