I'm a bit if a control freak when it comes to scents. I try to bring things that have little odor. Bologna sandwich with lettuce and Mayo (no tomoato so it doesn't get soggy and no mustard cuase the smell is too strong). Bags of pretzels (remove from original bag and put in sandwich bags as they don't make as much noise when opening and putting into your pack). I'll take a banana or a piece of fruit with little smell. I do take a few energy drinks but that's because I usually go 8 to 12 hours a day without coming out of the tree. Also, Animal Crackers are good to stave of the hunger pains. I hear some folks will eat apples if there are apples trees in the area. I also hear chocolate covered coffee beans can give you a nice kick when that mid afternoon lull kicks in.