I have, literally, and it's bollocks. Flies like honey, sure, but they go apeshit for vinegar to the point of drowning in it. Quite what that says about their intelligence compared with that of humans I couldn't possibly comment.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'