<p>A nebulizer (1A) is provided with a nebulizer body (100) and a relay tube (150). The nebulizer body (100) has a connecting section (132) including an aerosol outlet opening out of which aerosol is led, and the relay tube (150) has a connecting section (152) including an aerosol inlet opening into which the aerosol is led. The nebulizer body (100) and the relay tube (150) can take both a first connection state in which the relay tube (150) is removably connected to the nebulizer body (100) and a second connection state in which the relay tube (150) is non-removably connected to the nebulizer body (100). In the first connection state, the aerosol inlet opening and the aerosol outlet opening are interconnected, and in the second connection state, the aerosol outlet opening is closed by a closing section provided to the relay tube (150). The construction simply prevents reuse of the nebulizer body and the relay tube after use of the nebulizer.</p>
