I wasn't there at the time, but Georgia had a very mild allergic reaction (some hives on her face) to skin contact with a bit of food residue on a bib that she borrowed during a playdate. The bib was the style that slips on over your head (kind of like a tea towel with a head hole cut out of it), so it probably just grazed her cheeks. We think the culprit was either sesame (from hummus) or some peanut butter. The bib's owner suspects hummus. Of course she keeps their bibs clean to normal standards, though, so she jokingly inquired when we discussed the incident later, "Is Georgia allergic to sesame vapors or something?"
I agree -- it is kind of astounding how sensitive Georgia's skin can be. Fortunately, the hives didn't even require any Benadryl and disappeared within 15 minutes. But this incident was a good reminder of how careful we have to be to prevent Georgia's ingestion of allergens.
The silver lining here is that two more adults have now witnessed Georgia having some kind of allergic reaction, thus proving that I'm not crazy. Well, you know what I mean -- it's not that I thought I was crazy, but sometimes I wonder if other people think that Joe and I are just making of all of this allergy stuff up!