I always bring military style MRE' s to my stand and have them for lunch. I sometimes use a hand warmer to heat up the main course a little. Everything comes in foil pouches and they make very little noise when you are careful and I then put everything back in the plastic pouch they came in to contain the scent. I don' t know if I need to because I know the food smell is still on my breath but if a deer smelles human breath, I think its all over no matter what you ate.