What's all this talk about betting to prevent others from drawing out on you? That's NOT why you'd bet.
Let's see - what are you afraid of?
Someone with a 9 making a full house: sorry, but if someone is holding a 9, they aren't going away. If the turn and river gives them the winning hand, you're going to lose a lot of chips. Plain and simple.
An overpair. Two points: 1. If you are so worried about someone hitting a 3 outer (3 because a 9 gives them the better FH also) that you would bet everyone out of a pot that is probably going to be yours anyway, don't even bother playing poker 2. These are the calls you WANT because they have hands that are in deep trouble. And a 3rd bonus point: if someone is holding a premium pair, depending on the player, you probably aren't betting them out of the hand anyway, and they may shove if you bet, which is what you want!
Worrying about anything else like a straight flush is outrageous because of the horrible odds
of it hitting. If someone is chasing a straight flush, goodie for you!
Your decision to bet or check should be based on other circumstances and NOT on the fear of someone drawing out on your flopped monster.