Been avoiding this thread, because there's not much I could say without a chance of offending the author.
My limited experience with a deer scenting an arrow was when I missed (yes, I actually missed a shot

) one with a recurve. The deer jumped to the side, circled cautiously, and came back and sniffed the arrow. Like it was thinking, "What the heck kind of a bird is this?"
No panic, no fear, just curiosity.
I'd have to guess it was more than the scent of the fletching cement. Like maybe the scent of a human carrying freshly fletched arrows.
If I was convinced the fletching cement was the problem I'd probably try using smoke on them.