Afm Safecoat Safe Seal, White Gallon Can 1/Case

doese this have an oder?

Does it leave any residue? I want to use it over the back of a mirror which touches the wall, so I need to be sure this won't leave residue on walls.

Should afm safe seal be used on laminate floors, or would hard seal be better?

Can I paint over a plywood that has already be stained?