I don’t even know if this is in the right place but I need help before I love my mind!
Basically everytime I do a dark wash the clothes come out smelling funny, like damp with no washing powder smell. The whites on the other hand come out smelling lovely and fresh 
I’ve cleaned all the machine with every bastard thing on the market to no fucking avail!!
so I bought a brand new machine all was going well for a few weeks and guess what? The smell is back!!
What the fuck is this smell, how can I stop it and please tell me someone else has experienced this as all my family think I’m making it up! That is until they smell the washing 