Final answer:
Illnesses that require airborne precautions include the flu and the common cold. Microscopic pathogens are expelled into the air when an infected person sneezes or coughs, and nearby people can inhale these pathogens.
Step-by-step explanation:
The illnesses that would require you to take airborne precautions are those that spread through droplets in the air, such as the flu and the common cold. When someone infected with these illnesses sneezes or coughs, microscopic pathogens are expelled into the air. These pathogens can then be inhaled by nearby people, who become new hosts for the pathogens. It is important to cover your mouth and nose when sneezing or coughing, and to wash your hands frequently to prevent the spread of these illnesses.