A Rotten Situation
Many new, front loading and top loading clothes washing machines develop odors due to black mold, fungus, mildew and bacteria slime growing in the machine.
These nasties feed and grow on the stuff mixed with the gooey excess detergent that is coating the internal plumbing and under the door gasket.
The food “stuff” comes from microscopic natural fibers of wool, cotton, linen and silk mixed with the gooey excess detergent.
The food also comes from other sources like tomato sauce, gravy, dirt and other barnyard soils.
Because the machine never really dries out, the natural materials are almost guaranteed to rot.
All different types of black mold, fungus, mildew and bacteria slime grow on the rotting organic stuff mentioned above.
Microscopic bits and pieces of these nasties get transfered to the laundry during the wash cycles.
Then the T-shirts, towels and diapers start to smell after they get damp again.
It is also very common for the door gasket or detergent dispenser to have a range of mold problems while the machine does not have odor issues.