The idiom "right under one's nose" means that something is very close or nearby, but the person is not aware of it. It can be used to describe a situation where someone is searching for something or someone, but they are not able to find it even though it is in plain sight.
For example, if someone is looking for their keys and they are on the table in front of them, you can say, "Your keys are right under your nose!" This means that the keys are very close to them, but they didn't notice them.
Another example could be when someone is trying to solve a problem, but the solution is obvious and right in front of them. You can say, "The answer is right under your nose!" This means that the solution is very close and easy to find, but they are not seeing it.
Overall, the idiom "right under one's nose" is used to describe a situation where something is very close, but the person is not aware of it.
• The artist's masterpiece was right under the art critic's nose, but he failed to recognize its brilliance.
• The company's financial fraud was happening right under the CEO's nose, and he had no idea.
• I was looking for my keys everywhere, but they were right under my nose on the kitchen counter.
• The government's corruption scandal was happening right under the public's nose, but nobody took action.
• The thief stole the jewelry right under the museum's security's nose.
• The solution to the problem was right under our noses the whole time, but we didn't see it.