Just a noe - the guys have some threads on washing / cleaning ties. There were a lo of rayon -acetate ties made after WWII. You miht do a search for cleaning or washing mens ties.
Does anybody have any advice on getting the "old" smell out of rayon crepe? I haven't taken it to the dry cleaners yet, but I have a feeling the smell will remain. I've been airing it as often as possible, too.
I just had a thought - what about Kitty Litter? It works if you stick it into smelly trainers! I have never tried it with fabrics and obviously wouldn't let it touch the garment, but one of it's main jobs is to absorb odours.