That's an interesting theory. I did buy blanks. I definitely noticed a smell, but I honestly had to put the chips under my nose to catch it.@CRAW, @Himewad ,
I relabeled a barrel of Royals with gear labels month ago. These chips lost completely any smell while the rest have still a strong smell. Asking my self if the original Royal labels are responsible for the smell. What are your thoughts since you relabeled your Royals. Did you bought blanks?
I would be surprised if the smell was coming from the original labels, but I suppose it's possible. I think if they just get washed, they are fine.