I purchased some fabric at a garage sale and it has that "other person" smell. I know I need to wash and iron it before I put it in my stash. I usually don't wash new material that I by from LQS. What will happen if I don't use this for a while and when I decide to use it I forget that it has been washed and I use it with non-washed fabric? Will I have a problem? Now that I have talked this out, I know, put a note with the fabric that it has been washed so that I will know to wash the fabric that I use it with. Well that problem solved. Thanks anyway.