hell yea it happends when im just sittin not even thinking about it then its like i just had a nug under my nose for a split second i start looking around and shit. I heard your brain sometimes picks up a unknown or slight combination of already known smells and confuses it with a already well known smell. Its wierd tho or mybee from blazing you know how the smoke goes in your nose too mybee theres some left over resin that built up and you get a little whiff of that? Just guessing on that one