OK, I can understand holding K8s in an unraised blind. I might even complete the small blind with that. It's not much good--except when the flop gives you two pair, as here.
So let's assume, for the moment, a pot where everyone in it limped in preflop. Questions to ask yourself: is anyone in it the sort to limp with, say, KK? How about 88 or 55? Those may be limping hands for some. A lot of people will limp in with a Axs. No raises normally limits the range of hands likely to be present. How many limped in, anyway? Are we looking at the other blind or two limpers? Who amongst them often shows down a suited connector or other suited hand? Anyone just adore suited cards, besides you?
I'd play this situation aggressively, vicinity of pot sized bet. I agree with Lazmansa -- make them pay to draw. Remember, you could already be beat, but a set might be as anxious about the flush draw as you. Oh, and if the flush card comes...make a stab at it. If someone reraises you, you'll know. Oh, a made flush could be tricky and let you do the betting (yahoo, says he!), so don't assume that a call there means you are still good. Or maybe he's still drawing. Yes, this could be an expensive hand for you. Or it could be a nice pot to rake into your stack. It's an interesting situation. Do you feel lucky?