When I was a kid, pretty much everyone in my neighborhood had one dedicated closet in the house where wool sweaters, winter coats and jackets, socks and blankets were put in mothballs during the off season.
Some things went to the dry cleaners before wearing. Blankets just got a good airing out on the cloths line.
It was always a hoot on the first cold Sunday of the winter to smell the odor of mothballs in church from the guys that had forgotten to take their topcoats to cleaners.
And nobody died from mothball fumes.