How do you make sure that a PF 3-bettor doesn't just have overcards

[Redeye]

I really like either c/ring the flop and betting the turn (I fold to a turn raise unless the opponent is really aggressive), or if I think opponent is really aggressive and will 3-bet my flop c/r with big overs, I'll check call and donk a good turn card. I think most players will chill out after being c/red on the flop even with overs. Also, if you get smooth called and raised on the turn, I think it means that they have a big pair a huge % of the time.