How is carbon monoxide harmful to us?

Explanation

### Step-by-Step Text Solution:

1. **Understanding Carbon Monoxide**: Carbon monoxide (CO) is a colorless, odorless gas that is produced during the incomplete combustion of carbon-containing fuels.

2. **Formation of Carboxyhemoglobin**: When carbon monoxide enters the bloodstream, it binds with hemoglobin in red blood cells to form a compound known as carboxyhemoglobin.

3. **Impact on Oxygen Transport**: Hemoglobin is responsible for transporting oxygen from the lungs to the rest of the body. The formation of carboxyhemoglobin reduces the amount of hemoglobin available to carry oxygen.

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