Board Thread:False Info and Speculative Discussion/@comment-4723271-20140729090122/@comment-4091815-20140729194209

LadyX wrote: Derek did say some werewolves have the ability. Maybe not all of them can do it, but several of them can extend it out to cover others? Regardless, we've been mislead. I'm going to argue that we've not been misled by the show.

The "Alphas can hide their scent" thing was a Jeff quote that made it into canon before we stopped listening to Jeff.

In-universe there is no contradiction that I can find.