I rarely, if ever, cook with alcohol, even when I drank. Most of my recipes require lots of weird spices that my family looks at with disdain. But I don't think I would have issues with cooking, as the heat will dispel the alcohol when heated long enough. But I don't plan to cook too much French cuisine or backyard brats because my foods are more toward the fresh veggie spectrum. NA beer, however, is a big NO with me. Several years ago, I used that as a party substitute and found myself guzzling them like I did with real beer. AV was fooled by the taste but wanted more because the high wasn't there. NyQuil is a favorite medicinal for me, but only when I feel like absolute crap. When I take it, I go immediately to bed. If I am awake when the gritty, speedy feeling kicks in, I can't take that.
And mouthwash? Are you kidding me? Gaaakkk! Even in my worse throes of addiction I could never swallow that crap.