Hang in there! It definitely becomes easier. I think our sense of smell is also heightened while on the MC. My boss was standing about five feet from my desk eating a protein bar and I could smell it! (Yuck, by the way!)
After the first couple days where everything is a temptation, I find that I enjoy smelling the food even if I'm not going to eat it. It might take a couple more days, tho, so be strong!