It isn't.

[ Sliding in a dried leaf to use as a bookmark, Loki shuts his book and rises to his feet. He doesn't comment on the way Thor's expression had shifted; he hasn't mentioned it at all, despite the regularity with which it happens. Thor, it seems, does not like to think of the past. ]

You were simply too far for me to smell you. Though I'm sure such stench would have reached me soon enough.