Thanks for the quick response, I made a mistake,the Odour was coming from the WASHER not the dryer like I said. It smells when it starts the first spin to flush the water out.
Answer:
There is something cvaught in the pump and one of the ways I've heard of getting rid of it is to wait until the washer is all done with a load and then dumping a cup of bleach into it. Let this spin for a couple of seconds and leave it alone. Before doing the next load, let some water in and flush it with the spin cycle.