If the chemicals kicked you out of ketosis then it will reassert itself probably within 24 hours. As long as you've got plenty of stores and it wasn't true hunger the fast will continue. Your body has probably been confused and the fast interrupted and extra energy devoted to non-existant digestion for a while. And probably the biggest problem you will face is more cravings because the body now wants more food since you 'teased' it a bit with the taste of something. If you can put up with all this discomfort continue on and good luck. :)