* Carbon monoxide (CO): This is a colorless, odorless, and tasteless gas that can be deadly. It binds to hemoglobin in the blood, preventing it from carrying oxygen.
* Nitrogen dioxide (NO2): This gas irritates the lungs and contributes to respiratory problems, particularly in children and the elderly.
While other gases like carbon dioxide (CO2) and hydrocarbons are also present in exhaust fumes, they are not as directly harmful to human health as CO and NO2.
