Two PP hands, 66 and 99

[TommyO]

Loose passive live 3/6 LHE game.

I'm in middle position with 66. UTG raises all-in, two cold calls. I look to my left and see another guy with a short stack counting out a raise. It looks like it's going to get capped with anywhere from 5-7 players seeing the flop. Raise or fold?

A few hands later I get 99 again in middle position. Two limpers and the player to my right raises. If I cold call I would expect a few others to come along. Do I raise and try to get it heads-up or do I call and try to get odds for hitting a set?