have a nose (round)

To look around or examine a particular place. Cathy is such a snoop—any time she comes to our house, she just has to have a nose round. We don't have much time till the police chief comes back. You go have a nose round his office, and I'll keep watch out here. If you want to know why someone was fired, talk to Jenna—she maintains all the employee files and can easily have a nose round.

have a nose ˈround

(British English, informal) look around a place; look for something in a place: Let’s have a quick nose round before we leave.