Honestly, quit as soon as you can. After the two week mark, you’ll start smelling things again. At the one month mark, you’ll notice that you’re not constantly out of breath. Cravings still occasionally happen, but it shifts from “god damn it I need a donut right now” to “hmm a donut sounds good right now… But I don’t wanna bother with going to the donut shop.” The cravings never fully vanish, but they definitely change and become easier to dismiss as a passing whim.