This is rather simple situation and my question is concerning play preflop. Usually I might re-raise this hand PF but not this time (for some reason). Would you automatically re-raise PF? What if my hand was double suited?

CO was very loose and was playing nearly every pot. Consequently, I wasn't sure if I was able to get the button with re-raise.

PokerStars Pot-Limit Omaha High, $0.02 BB (9 handed) from (Format: Bet The Pot)

Button ($3.05)
SB ($1.72)
BB ($2.96)
UTG ($6.35)
UTG+1 ($3.64)
MP1 ($2.43)
MP2 ($7.01)
Hero ($1.99)
CO ($2.24)

Preflop: Hero is MP3 with , , , .
1 fold, UTG+1 calls $0.02, MP1 raises to $0.06, 1 fold, Hero calls $0.06, CO calls $0.06, 2 folds, BB calls $0.04, UTG+1 calls $0.04.

I would likely re-raise here with the suited A, he might just have KK and you want to try and cut the field down, that said AAds i would definately repop it, you don't want heaps of people in the pot with a hand like yours, nice pre flop but very vulnerable post flop unless you flop some draws

At higher levels, re-raising AA preflop (esp. if you don't re-raise any other hand) with deep stacks is a recipe for disaster. You're probably OK doing it at $2PLO, that said, I'd learn to play poker (rather than a pushfest) and just call.

you aren't gonna reraise enough here and for the most part, you telegraph your hand. I just call and play with position on the raiser postflop.