Villain 3bet SBvBTN 14%

Cbet (3bet pots) 73%(90%) / 59%(80%) / 40%

Villain loves to double barrel air or weak made hands but then shuts down on the river and has a showdown of only 21% (high fold vs river bet). He's also very suspicious of raises only folding 30%

So first instinct is to keep calling here but are there any merits to a raise? The board is drawy as hell and villain isn't going to fold Kx or a draw.