The white fumes you see are HCl (g), which is very hygroscopic, pulling moisture out of the air. Technically, it is HCl (aq), but calling it that is cheating people out of information: (l) and (aq) imply an accumulation of fluid, in a vessel of some sort, maybe out of the way, and seal-able. Those white fumes are going everywhere, behaving like a gas. That's just from a safety perspective mind you, if you have some reaction that only proceeds anydrous, these fumes aren't good for it, but still, you specify you want HCl (g) anhydrous, you don't call the fumes HCl (aq)