* Carbon monoxide (CO) is a colorless, odorless gas that can cause dizziness, headaches, nausea, and even death in high concentrations. It is produced when fuel does not burn completely in the engine.
* Nitrogen oxides (NOx) are a group of gases that can contribute to the formation of smog and acid rain. They can also irritate the respiratory tract, causing coughing, wheezing, and shortness of breath.
* Particulate matter (PM) is a mixture of solid and liquid particles that can be suspended in the air. PM can irritate the eyes, nose, and throat, and can also worsen respiratory problems such as asthma and bronchitis.
* Volatile organic compounds (VOCs) are a group of chemicals that are emitted from a variety of sources, including car exhaust. VOCs can contribute to the formation of smog, and can also be harmful to human health if inhaled.
In addition to the pollutants listed above, car exhaust fumes can also contain other hazardous chemicals, such as lead, mercury, and benzene. These chemicals can be particularly harmful to children and pregnant women.
For these reasons, it is important to avoid breathing in car exhaust fumes. If you must be in an area with heavy traffic, it is best to stay indoors or to wear a face mask to filter out the pollutants.
