You could try washing them all in a hot (60 degree wash) with extra detergent, then rinsing until there are no bubbles left. I had to do this with my inserts recently (first time in 15 months) and they all smell so much better.
If that doesn't work, I'm sorry, I haven't got any more ideas
Can you manually set your machine do an extra rinse? We have a Bosch too which I have to set to do an extra rinse after the main wash has finished. It's a bit annoying cos my machine is in the cellar so I have to keep going down to check it and start the rinse. I sound really lazy don't I?