under one's nose

(right) under (one's) (very) nose

1. Easy to see or find. I've been looking all over for that invitation, and it was right under my nose the whole time!
2. When someone is physically present. I can't believe that one of my employees was falsifying records right under my nose.
See also: nose

under one's nose

Right there, in plain view, as in Your keys are on the table, right under your nose. This expression is generally a reminder that something one cannot find is actually there. [c. 1600]
See also: nose
References in classic literature ?
The man one can't find with all one's messengers sent about the place, sitting just under one's nose, exactly where one never thought of looking