I think I figured out my trigger

So I’ve been on the big 6 avoidance diet for months now (no eggs, soy, dairy, wheat, nuts, shellfish). I’ve been feeling really great. No irritation at all. There has been a few occasions however, where I have had things with corn or corn starch and had major flare ups. Last night I had this vegan spray cheese stuff and didn’t notice it had corn starch on the ingredients list. Major flare up. My esophagus is so irritated again today. Has anyone else on here had corn as a trigger? It doesn’t seem like a very common trigger. I’ve actually never seen anyone mention corn as their trigger.