Wildfire smoke contains a complex mixture of pollutants including particulate matter (PM), carbon monoxide (CO), nitrogen oxides (NOx), and ozone (O3). PM is a mixture of solid particles and liquid droplets found in the air. PM can come from a variety of sources, including wildfires, industrial emissions, vehicle exhaust, and dust.

PM is bad for your lungs because it can cause respiratory problems such as asthma, bronchitis, and emphysema. PM can also lead to heart disease, stroke, and cancer.

CO is a gas that is produced when fuel is burned. CO is bad for your lungs because it can cause headaches, dizziness, nausea, and vomiting. CO can also lead to heart disease and stroke.

NOx is a group of gases that are produced when fuel is burned. NOx can cause respiratory problems such as asthma, bronchitis, and emphysema. NOx can also lead to heart disease and stroke.

O3 is a gas that is formed when sunlight reacts with pollutants in the air. O3 can cause respiratory problems such as asthma, bronchitis, and emphysema. O3 can also lead to heart disease and stroke.

In addition to these pollutants, wildfire smoke can also contain other harmful substances such as benzene, formaldehyde, and dioxins. These substances can cause a variety of health problems, including cancer, reproductive problems, and birth defects.

Wildfire smoke can also be bad for your lungs because it can irritate the airways and cause inflammation. This inflammation can make it difficult to breathe and can lead to respiratory problems such as asthma, bronchitis, and emphysema.

If you are exposed to wildfire smoke, it is important to take precautions to protect your lungs. These precautions include:

* Staying indoors as much as possible

* Keeping windows and doors closed

* Using an air purifier

* Wearing a face mask if you must go outside

* Avoiding strenuous activity outdoors