Abstract: A spray device includes a mouthpiece that accommodates a spray nozzle unit. The spray nozzle unit is operatively connected to a liquid reservoir to receive a pressurized liquid to be sprayed. A connection between the spray nozzle unit and the liquid reservoir is effected by a flexible tube that connects at one end substantially fixedly to the mouth piece in fluid communication with the spray nozzle device. The liquid reservoir is interchangeably coupled to the opposite end of the flexible tube and, preferably, comprises a standard syringe. A spray delivery device comprises a holder for holding the syringe and has at least one manipulator member that is configured to impose an enhanced force on the plunger.