I don't understand why someone would go to the trouble of making a charity quilt with dirty fabrics. I belong to the group that prewashes fabrics before making into quilts. I remember back when I used to smoke, and I smoked in my bedroom where I had my sewing machine set up. After I quit, I picked up a cheater panel that my sister had given me and it "reeked of cigarette smoke" - when I quit I really noticed how cigarette smoke had taken over. I washed all the fabric that I had in my bedroom before making anything. I would not make a charity quilt on anything less than I would for my own use or for my family. I would definitely try to wash the dirty quilt, charity quilt or not and I think that if I were a long arm quilter, I would refuse to accept dirty quilts, even if they were willing to pay me to quilt them. That's just me.