Firefighters should wear scuba in hazardous atmospheres because exposure to particulate contaminants such as smoke can cause lung cancer or cardiovascular disease.
Particulate contaminants are macro or microscopic solid or liquid materials that float in the atmosphere. When these materials are present in an amount capable of causing a health hazard, they are described as pollutants.
Examples of particulate contaminants are smoke, dust, ashes, etc. They constitute health hazards when inhaled and bioaccumulated to a certain level in the body.
Some of the health hazards they constitute include cancer, cardiovascular problems, kidney problems, etc.
More on particulate pollutants can be found here: https://brainly.com/question/15230454
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