A total lack of entries in this thread proves only what I was suspecting all along: You cannot create a 'Vampire Effect' in Carrara. You cannot tell Carrara that a certain object, or a certain surface, does not reflect in a mirror.

Well, Shade3D has such a feature. You can specify that a given surface has no reflection, for a neat and clean vampire effect. As soon as I have time I will give you all a solid proof of this very clever feature in Shade3D.