Poker Stars
Pot Limit Omaha Ring game
Blinds: $0.50/$1
5 players
Converter

Stack sizes:
UTG: $62.05
CO: $178.55
Button: $142.95
Hero: $96.50
BB: $58

Pre-flop: (5 players) Hero is SB with K T J 7
UTG raises to $3, 2 folds, Hero calls, BB calls.

Flop: Q A 9 ($9, 3 players)
Hero checks, BB checks, UTG bets $7, Hero ???

I would just call. I'm not sure you have much fold equity, and you are likely to be an underdog to his hand.

Definitely smooth call.

Don't forget to hit on turn cus you may have to fold an UI turn.