Of course. None of this would have fooled me if I couldn't smell it too. [ He relies on his nose as much as if not more than his other senses for some things, and trying to see through illusions is one of those. It doesn't work as well when it's his own mind playing tricks on him, though. ]

I thought I sensed a fairly large concentration of Darkness earlier, which is why I thought there might be Heartless around, but it's possible that was just me as well. Either way, it's concerning.