Shake the spray cans well for at least 3 minutes and then in intervals during the painting process.
Water-based spray paint dries slightly slower than solvent-based spray.
Even though water-based spray paint smells less, they still contain a propellant and form a color dust when used, so we always recommend using a gas mask / dust filter.
Please note that water-based spray contains less resin than "regular" spray, which in turn causes the paint dries faster at and around the cap / nozzle. Wich could make caps, mostly skinny ones, to clog faster.