damaquilts

I was just in Tuesday Morning and bought June Tailor Quilters Stencil Marking Spray. Has anyone else this stuff? I just sprayed it on a scrap and washed it out and ironed the scrap dry . Its seems to all come out and not leave a stain but it was all in a matter of a few minutes. Wondering if anyone left it on longer?
It does stink though when you spray it.