under your nose
US /ˈʌndər jʊər noʊz/
UK /ˈʌndər jʊər noʊz/

1.
delante de las narices, bajo las narices
in plain sight; in an obvious place, but often unnoticed
:
•
The keys were right under your nose the whole time.
Las llaves estuvieron todo el tiempo justo delante de tus narices.
•
He didn't realize the answer was right under his nose.
No se dio cuenta de que la respuesta estaba justo delante de sus narices.