It's a nice trap that I've used successfully twice now.

Knowing if that's the scenario your facing is another story, but sometimes there's enough info that the opponent is chasing the flush. For one, maybe we've seen him chase the straight and/or flush on several occasions (and then noted it!). This player likes just about any two suited cards. I used this move on that type of player that tends to chase those hands.

Now combine that player with a flop that looks something like 2 6 8, with two suited cards. And in early position, they are checking, but then calling you're 1/2 pot to full pot sized bets in mid/late position...

lol... that player right there is gonna take the bait.