The Jerusalem Talmud has a more inclusive and general definition of "Zoreh". By this definition, use of the Venturi tube spray system and spray painting would come under this prohibition, while butane or propane propelled sprays (common in deodorants and air fresheners, etc.) are permissible to operate as the dispersal force generated isn't from air, rather from the propellant within the can. According to the Babylonian Talmud's definition, neither of the above spraying methods is involved in sorting undesirable from desirable and therefore not part of this heading.