Can I get laser surgery for jowls?

Most likely the biggest risk factor for your prior horrific staph infection is that you were a heavy smoker and also may have used excess alcohol. Because you are continuing to have this unhealthy lifestyle you would be a bad candidate for surgery as the risk to your health is too great. Laser for jowls only will give you little if any improvment. On the otherhand if you can get your life in order and lead a healthy one - stop smoking, more than one drink per day, exercise, normal weight - you would probably be a reasonable candidate for facial rejuvenation.

Smoking will increase your risks. A surgery is a big risk for you.  Anyone who wants to do your surgery is taking you and them on a very dangerous journey until you can reduce your risk profile.