Definition & Meaning of "holy smoke"in English

What is the origin of the exclamation "holy smoke" and how is it used?

Holy smoke is an exclamation used to express surprise, shock, or amazement. It appeared in American and British English in the late 19th to early 20th century as a euphemistic alternative to "holy God" or "holy ghost," softening religious references while still conveying strong emotion. People used it in newspapers, everyday speech, and entertainment to react to astonishing or unexpected events. Today it is inoffensive, somewhat old-fashioned, and expressive, often adding a dramatic or playful tone to reactions without being vulgar.