A couple of weeks ago I was helping a friend to clean the house, we had fun - till she found in her closet one of her dear old clothes fully covered with a fuzzy substance. She was so upset!
Of course we have thrown it to the trash. It was mold, and its not advised to touch its spores with bare hands, as it may cause bad reaction to skin (allergy or some rashes).
We kind of hurried to throw it, as i found out later, most clothing items contaminated with mold can be cleaned. Often it leaves some dirty marks on the fabric, depending on the color and type.
After making some researches I gathered some methods on how to get rid of mold.

Bleaching is the most used and the most known method for reaching this goal, but I'm not sure if people are doing it right. Best results have the white or light colored clothes. Bleaching has no effect (at least a good one) in killing molds on the porous fabric. First thing to do is removing the majority of the mold with a brush, then spray the item with a pre-wash solution. Leave it for about 50 minutes and then throw the clothing into the washing machine without drying. It has to dry naturally - the sun is a great tool for bleaching fabric, but if you use the artificial way to dry the clothes, it can cause the stain to get deeper into the fabric.
Curtains and the upholds also can be cleaned from mold this way.

You cannot clean moldy if it is on natural leather clothes or items. Mold discolors them and there is nothing you can do about it. Sorry.

The best way to get rid of mold is to not let it into your house. Suck up all of it with the vacuum and its brush attached. Better if the vacuum has a good filter - it won't spread the mold spores back in the air of your home.

Good Luck!