Just a simple thought for ya – ifin ya leave clothes that have been through the full wash and spin cycle in a washer for longer than normal you can often get the smelly result you speak about.
It apears to be caused by the combination of dampness and bleaches used in the wash chemicals.
Give it a try as soon as it is finished doing it’s job remove the clothes from the machine.
Almost willing to bet the smell will not return.
Hope this helps.
Selgas Services Ltd
Craftsman Gasfitters, Plumbers, Electrical Service Technicians