No. We don't want to ban certain topics out of the main channel and make people worry about whether or not they are allowed to talk about something. This makes an uncomfortable community and puts unnecessary workload on Staff. If you don't like the current topic discussed, you can always make an attempt to change the subject or just leave the Cbox to post on the forums until the topic shifts. Alternately, if you want to have a private discussion with another member, you can create your own personal chatbox.
You can go to a different chatroom already in existence using this button from the main chatbox: