Here is the alcohol burn off chart that was mentioned. It's much less than you would think.
Alcohol Burn-off Chart
Personally, I'm not going to go out of my way to seek out foods cooked with alcohol, but I'm not going to live my life avoiding them. A single beer in a pot of chili, fine, a little white wine in a sauce, fine (though I wouldn't personally cook with alcohol now because I don't want the bottles in the house). Though just about everything else is, food is not one of my triggers. Food and alcohol exist in two separate worlds for me.