I have a new front loading washer (Whirlpool or Kennmore) In general I like the way it works except for one thing, I use the recommended amount of HE laundry soap but whenever I do towels and dry them they smell fine, but after one use they seem to get a musty smell to them. Quite sometime ago someone mentioned a filter or trap somewhere under the washer or in front, I looked for my manuel and could not find any mention of a filter somewhere. I also am conscious about cleaning and leaving my door open.