Until I had done all my cloths I kept them in plastic bags after laundering them. If you store permethrine treated cloths with other clean cloths they will get contaminated.
It is strongoloids that drove me to this. They come out of the skin and weave themselves in the cloth.
The itching and the problems won't go away because you will still have the parasite but at least you won't have to worry about reinfection. I guarantee you will notice a difference.
Fungi have spores and they are plants, actually lichens. You can get internal fungus like candida but it usually doesn't contaminate your cloths.