An inhalation aid to be used in connection with an aerosol dispenser. The inhalation aid includes a chamber designed with an opening for connection to an aerosol dispenser and an opening including a mouthpiece for drawing the aerosol. The chamber is designed with a variable volume. The chamber is delimited by a conically tapering expansion bellows made of a continuous, elastic material, whereby a simple and tight construction of the inhalation aid is obtainable.