JwithJ - I just wash my woollies and then soak them for half an hour in a solution of warm water and a pea sized amount of lanolin. Seems to work for me!

Daintree - try a canestan rinse for stinky nappies - strip wash is to get the absorbency back up, not necessarily remove stinky poo fumes.

Oh and when I use my GK at night - I use a bamboo booster, bamboo insert and microfibre. Does the trick for both heavy wetheads here.