<<Disclaimer: Verify this information before applying it to your situation.>> Hi to everyone and thank you to those who have already responded. I knew when I wrote the message about accidental exposures, I wasn't including enough info. Now I know what I need to add. I have an excellent support group and they told me all about hidden glutens that are unexpected like vinegar and preservatives. In fact, I eat only organic GF foods. In this support group, I was told that an individual could inhale a gluten containing dust, have some of it (the dust) cling to their throat and swallow the gluten containing dust along with their saliva. It makes sense to me. Especially when my reactions only come after being in contact with my "baking" friends. Has anyone had experiences like this? And how can they be prevented?