Carbon monoxide is a colorless, odorless, tasteless gas that is lighter than air. High concentrations of carbon monoxide can interfere with the oxygen-carrying capacity of the bloodstream, and prolonged exposure can cause serious injury and death. The Centers for Disease Control and Prevention (CDC) report that carbon monoxide poisoning kills more than 400 people and hospitalizes 4,000 every year. Workers who successfully complete this course should be able to recognize symptoms of and treatment for carbon monoxide exposure. This microlearning course is a small part of a broader topic. For a more complete training experience, see CHM-8.2 Carbon Monoxide Awareness.