An apparatus for discharging fluid for a subject breathing. The apparatus includes a fluid cavity for conveying a fluid to be discharged a valve for guiding the flow of fluid through the fluid cavity a control unit for controlling the valve for guiding the flow of fluid a first housing having a wall and a hole on this wall for fluid flowing through the fluid cavity a first member apart from the first housing having holes discharging fluid through them for the subject breathing a chamber between the first member and the first housing for receiving the fluid coming along the fluid cavity a vibrator making the first member to vibrate and discharge fluid through the holes to a subject breathing tube. The vibrator is in contact with the first member through a transmitter extending towards the chamber and which transmitter transmits the vibration effect from the vibrator to the first member.
