Well, hmmm... I had a couple of thoughts... if you use any kind of spray adhesive, it will leave chemicals in your fabric. However, washing the fabric after basting is the best way to deal with that! What is the difference in using hairspray, adhesive or other chemicals, like, say, laundry detergent? Don't ALL of those things leave chemicals behind? (fragrance, softness, etc,) Yes, it is flammable...so is nail polish remover, and even vegetable oil!
I personally think that this is a great idea! Cheaper and easier to use and remove.
We are careful with other chemicals in our lives, so I guess my point is this- (to the doom-sayers) use what you want to use, be open to new ideas and realize that you can learn something from everyone you come in contact with.
I love being part of this amazing group of smart, creative people. Thanks for the tip!