I will answer from the judges point. One item on all judging sheets is "Appearance" which means is it clean and without major wrinkles etc. So the answer is probably yes if the quilt was soiled in the quilting process.
Should be free of pet hair and free of odor. Some quilts come to competition smelling so bad it is difficult to stay in the room. One show I judged this past year had one quilt that had been put in a plastic bag until ready for judging.