Researchers have developed odorless socks. The sock fabric is made by attaching molecules that contain chlorine, called halamines, to textile fibers. Each year, more than $1 billion is spent on neck ties in the U.S. Many early sewing machines were destroyed by mobs or workers who felt their jobs were threatened by automation. The first fashion house was established in 1858 by Charles Worth. He opened this store in Paris with the idea of having pre-made gowns presented on models to his customers. Some silkworms can spin cocoons that contain more than two miles of silk.