Final answer:
Popcorn lung, otherwise known as bronchiolitis obliterans, is a respiratory disorder that affects the bronchioles of the lungs. Workers at popcorn factories who were exposed to the chemical diacetyl were diagnosed with this disorder, which led to its common name.
Step-by-step explanation:
The subject of this question is Health. The term "popcorn lung" refers to a respiratory disorder called bronchiolitis obliterans, which causes the narrowing and scarring of the bronchioles in the lungs. This disorder became known as "popcorn lung" because it was initially found in workers at popcorn factories where they were exposed to a chemical called diacetyl, which is used in buttery flavorings.
Popcorn lung is a serious health concern as it greatly reduces the breathing capacity of individuals affected by it. It is important to be aware of the potential risks associated with exposure to harmful chemicals in certain occupational settings, such as popcorn factories.