<<Disclaimer: Verify this information before applying it to your situation.>> Has anyone considered that the vinegar sensitivity may have nothing to do with its gluten content, which one chemical engineer has pointed out, but that one may have been conditioned to elicit a physiological response because they have ingested products with vinegar and gluten in it? Even after taking gluten out of your diet, which does not not have a noticeable taste or smell (to my knowledge), the vinegar can clearly be detected by a person's powerful sense of smell and have could have made an association with the vinegar smell to remove the offending food(s) from your body quickly. You may recall Pavlov, Skinner,...etc. This can be, and most probably is, an unconscious association. This is my theory on the issue. Any behavioral psychologists out there who can shed some light on this issue? -Alex [log in to unmask]