getting rid of the odors in old textiles still doesn't address the problem of old cigarette tars and gathered dirts.
I like the idea of a home ozone machine though, I'd happily sew with recycled men's shirts to rest of my sewing life but the scent the second hand sstores put into them is a real booger to get out. I run them through a full wash cycle twice at home and another wouldn't hurt. that smell is Really stubborn.