An aerosol delivery system has a fluid-transfer article that has a first region for holding an aerosol precursor and a second region to which the aerosol precursor is transferred from the first region. The second region includes a hole therein, through which hole aerosol precursor may pass. At least a part of the heater is deformable, in response to a temperature change between a first and a second temperature. When at the second temperature, which normally is higher than the first temperature, the deformable part of the heater is spaced from the second region to define an air-flow pathway between the heater and the second region, through which air can flow to transfer the aerosol to the user. At the first temperature, the deformable part of the heater moves into contact with the second region, to block the hole and to obstruct the air-flow pathway, so as to reduce escape of aerosol precursor from the second region of the fluid-transfer article.
