A biohazard refers to any biological substance that poses a threat to the health of living organisms, primarily humans. This can include pathogens like bacteria, viruses, and fungi, as well as biological materials such as blood, tissues, and other bodily fluids. Biohazards can lead to diseases and infections, making proper handling and disposal essential in laboratories, hospitals, and other settings. To manage biohazards, specific safety protocols and regulations are in place, often guided by organizations like the Centers for Disease Control and Prevention (CDC). These guidelines help ensure that individuals working with potentially dangerous biological materials are protected and that the environment remains safe from contamination.