Carbon Monoxide (CO)
Enough of this pollutant can cause headaches in otherwise healthy people. It can also exacerbate symptoms in those who suffer heart disease.
Hydrocarbons (HC)
These are the major smog contributors, which come from fossil fuel that is unburned.
Large Particles
These include soot, smoke, and dust in the air that can irritate our respiratory system. Large particles—which are considered 10 microns or more in diameter—are regulated by the Clean Air Act.
Small (or Fine) Particles
Particles that are 2.5 microns have been connected with asthma, bronchitis, and even death related to inhalation. That's why in 1997, the EPA (Environmental Protection Agency) launched a new rule that limits emissions of these tiny irritants.
What You Can Do to Help
To do your part to reduce air pollution, you should consider switching to renewable energy and do your best to maximize your energy efficiency.



