What can I do about it? Dd is 10mo most of our nappies were preloved though. I wash at 40 in a small amount if non bio I rinse first then wash on a c80 minutes cycle and sometimes I rinse again after if the water looked like it still had bubbles. I dont understand why they smell! I used to put a bit of tea tree oil in too, but stopped that bc I was worried about degrading the bamboo.