I have a nose. emotion_awesome
although, I agree with what people are saying. If you want to go with the traditional chibi appearance, a nose would look odd on the avatar.
Also, Stein has a great nose.
I can't really see noses working that well on avatars, not a lot of different styles at least.
I would think just a small amount of shading and highlight to create the implied sense of a nose rather than doing what they have with masquerade and outlining it.