From the linked blog-
"At LaGuardia, my wife, a seasoned traveler, dutifully presented the see-through plastic bag containing a few small bottles of the approved size containing liquid. One was seized. It contained something she valued. Pointing out that it was regulation size, she got, “It ain’t labeled, lady.”

Supposing whatever possibly dangerous substance it contained had, say, “olive oil” written on it, I inquired, then would it be O.K.?

“Yes.”"
Since when have bottles in the Kippie Bag required labels? The tsa.gov web page on Kippie Bags (http://www.tsa.gov/311/index.shtm) makes no mention of any such requirement.