In my work, I am considered the expert on a specific subject. I share an office with a male who has less knowledge then me. There is one of the other male staff who comes into our office and has a question about my area of expertise. He never looks at me when he asks his question, he only ever looks at my male co-worker. Even when my male co-worker defers the question to me and I answer, this person still won’t address me directly, It’s as if I’m not even present in the room.