Any advice gratefully received! Stupid me,
was a night nappy worn but actually dry, (if any consolation) somehow caught up in my dirty washing bundle in morning rush. DDs black dance leggings, DS avengers pyjamas, lovely navy Next pyjama top of mine and various other dark items covered in white fluff.. 
I've shaken them out in garden and hung on the line, despite it being a wet drizzly day! (Neighbours probably think I'm barmy!) despite vigorously shaking them, still covered in white layer.. I may add a pic.. I've wiped out machine, which didn't seem to bad, and stuck on a 90 degree service wash with bleach to hopefully clear any remnants...
So first thread in housekeeping, any ideas please folks?