I have just made a wool pressing mat. I cut 4 layers of older 100% wool fabric into 12 1/2" squares and sewed around the outside edges so they wouldn't shift. Then I made a "pillowcase" out of a wool flannel for the square. This fits nicely on the wide end of my small pressing board that I use near my sewing machine. I've only used it a couple of days, but am liking how it is working out. I have used water to spritz on the seams when needed. Don''t know if it smells..I'm to tho poster who can't smell. I figure the pillowcase can be washed if necessary. All fabrics were washed with hot water and dried in the drier prior to making this.