I'm finding the thing with yarns (aside from the dyes used to make your pretty coloured wicks

) have been subjected to a factory "sizing" process...which is a chemical process that relaxes then holds a twist put into the cotton so that yarn stays yarn (same stuff used to keep brand new bed sheets nice and flat, new jeans pressed, "T" shirts smooth and pressed, etc...) and that chemical is scented...ever wonder why all new cotton clothes all smell similar?...sizing...and it'll make your
juice taste Walmart fresh...It's a pretty inert chemical slurry mostly consisting of natural starches so your not gonna die or anything but it will impede absorption, which is what we are trying to attain. It's this sizing removal that Evilgrym (remember him, the guy that started this epic
thread

) advises to boil the snot out of string, thread, yarn, etc, (basically anything that is "spun")...cotton batton, cotton balls (Bunny Balls)...hell you could pick the cotton off a bunch of Qtips...it's as pure/raw/unprocessed/sterile as it gets.