CO is a loose player 37/26 after 122 hands, quite aggressive post flop with 4.0 af.
BU is also a little bit loose 28/21 with 5% 3bet from the BU. 550 hands.

I called pf because the hand has a good playability and i had good odds to call. I think that squeezing here with this hand would also be a good option, CO is loose so maybe i could get him to fold a lot of hands, if called I would still have a quite good hand to play at the flop.

CO has an range advantage and the only nut hand I see in my range here might be 99, would be bad idea to raise any hands here on this flop, I think calling and folding here are both good options, but taking into account that CO is loose and aggressive I don't want to give up my pair just yet. Also folding 9 with a good kicker and some backdoor potential might be just overfolding.

Turn is a street I'm not quite sure what to do. Calling I think is a mistake, not really getting the correct odds to call here, I'm basically just looking for a spade draw. Right now I would consider folding or raising here.
I'm more into raising as I could represent Jx, since I'm blocking some Jx hands in his range (QJ for example).

Let me know what you think and what you would do.