What type of materials interfere with oxygen exchange during normal respiration?

Asphyxiants are materials that can impede or prevent the normal exchange of oxygen during respiration. They typically do this by displacing oxygen in the air or by affecting the body's ability to use oxygen effectively. Common asphyxiants include gases like carbon dioxide, carbon monoxide, and other substances that can lead to a lack of available oxygen, making it difficult for the body's tissues to receive the necessary amount for proper functioning.

Inhalation of asphyxiants can lead to symptoms ranging from dizziness and confusion to unconsciousness and death, depending on the concentration and duration of exposure. This property makes asphyxiants particularly hazardous in closed or poorly ventilated environments. Understanding this function of asphyxiants is essential for recognizing and mitigating risks in emergency situations or when working with hazardous materials.