What does the term 'biohazard' refer to?

The term 'biohazard' refers specifically to a biological or chemical substance that poses a threat to the health of humans or the environment. This can include pathogens such as bacteria, viruses, and fungi, as well as biological materials that can cause harm or disease. The significance of identifying something as a biohazard is crucial in medical and laboratory settings, as it requires specific safety protocols to handle, store, and dispose of these substances properly to prevent exposure or contamination. Such understanding ensures that healthcare professionals implement the necessary safety measures to protect not only themselves but also patients and the surrounding community from potential harm. Other options refer to substances that do not pose hazards or that have neutral or positive health impacts, but they do not align with the broader definition of a biohazard.