Our "resident expert" on the Sense & Sensibility sewing forum posted this, and I wanted to pass this along here, as I know the majority of you sew:
Could I please recommend that everyone who tears fabric for clothes/costume, rather than cutting it, buys AND USES a face mask from a pharmacy. My incurable, though treatable, lung problem could be caused by inhaling fibres from tearing calico/muslin for petticoats, and silks and cottons. I would hate anyone to go the same medical route as me, and many of you are a lot younger than I was when I started working with costumes. This also goes for people who work with fibre like knitting, spinning and weaving.