What is the origin of the idiom "not be caught dead" and when to use it?

The idiom "not be caught dead" originates from the idea of preserving one's reputation and dignity. It conveys the strong sentiment that a person would rather face severe consequences, even death, than engage in a particular action or associate with something they strongly dislike or disapprove of. This idiom is used to emphasize that someone strongly dislikes or disapproves of a particular action, situation, or item. It is often employed to convey a sense of personal preference, moral objection, or social stigma.