口臭

1. Origins, structure, and basic meaning

• Structure: 口臭, read こうしゅう, means an unpleasant odor from the mouth, or bad breath.
• Basic usage: A textbook character may worry about it, or a drama protagonist may be embarrassed when a friend points it out.

2. Common pitfalls and similar expressions

• An unpleasant odor from the mouth
  • This denotes bad breath that a character worries about or is embarrassed to have pointed out. The term alone does not determine its cause or an underlying illness.