keep nose out of
keep (one's) nose out of (something)
To not pry into something. Hey, keep your nose out of my private business—it has nothing to do with you anyway.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
keep one's nose out of something
Fig. to stay out of something, such as someone else's business. (See also keep one's nose out of someone's business.) Try to keep your nose out of stuff that doesn't concern you. Keep your nose out of my personal affairs.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.