I think that we should not question the salary to other people because it's private. Sometimes it might make him think you want to insult him. Even if you don't think so, according to.
I think that we should not ask about salary with others. Because it is a private matter Sometimes it may be that they think you want to insult him. Even if you do not think so.
I don't think we should be asking questions about salary and others. Because it is personal. Sometimes it might make him think you need to look down on him. Even if you don't think so.