I would, of course, try to end the conversation politely and without showing any irritation. For me, there are several ways to finish the talk: I could say that I have other things to do, thank the person for the conversation and say goodbye, or gently change the topic and gradually close the discussion. The main point is that I don’t want to show that the person is unpleasant to me. After that, I would definitely reflect on why this person makes me feel annoyed. Because anyone who triggers such a strong emotion highlights something within myself, some part of my soul that I have not yet acknowledged or accepted.
Margaryta thanks for sharing.