I have used an industrial polyurethane, coating , solvents quite noxious,
so the organic solvents safety mask , or at least a stiff breeze, was part of the tools.

it saturated fabric that was just lightly coated, on the roll, before sewing.

I suggest , Zip lock freezer bags, and heavy duty trash bags for , Liners
since buying a $100. a gallon chemical is probably not what you are thinking of.