If you with in a cafe or a pub or restaurant or something then fine. Museum, tourist attraction, idk bus? All also fine.
If you work in an office or factory or whatever, ie a place but open to the public, then I have never heard of this ever happening.
My mum has no real idea what I do. She made this really weird speech at my wedding about how at least I had loads of friends cos the rest of my life is obviously a waste of time. Think she feels ok with it now cos i have an employer at the moment