Atomizer for a ventilation machine with a ventilator (100), comprising a body (1, 2) with a first connection (10) for connecting the atomizer to a ventilator (100) and a second connection (31) for connecting the atomizer to a line (103) leading to a patient, wherein the body forms a flow channel from the first connection (10) to the second connection (31)； and an atomizing device (3) for atomizing a fluid； characterized in that the atomizing device (3) is disposed between the first connection (10) and the second connection (31) in the flow channel and adapted so that the fluid can be atomized substantially parallel to, and preferably in, the flow direction from the first connection to the second connection.
