I have purchased these slippers fro Old Friend several times before for both my husband, and myself. This last purchase, is a total disappointment! I have just started wearing them as I had my old pair still in use. I noticed this "odd" odor and thought it was from the outdoors coming into our house. NO, it is the slippers! My husband came over, and said, "the bottoms of the inside of the slipper is burnished in some way." They smell as if they have been "burned" , or in a fire, and near a fire. We have NO fireplace, no wood stove and I don't wear them outside. They STINK! I can't believe for this price I have to put up with this horrible odor! Wearing for 2 weeks now, and it's still AWFUL! I don't have the box, I threw it away and tossed the slippers in our bedroom when I got them as I have had such great luck in the past with Old Friend. I won't buy these ever again as the odor is noxious!! Whatever you did Old Friend, you are going to kill your business with these!