An aerosol delivery system has an air duct passing through it, from an inlet to a mouthpiece. The air duct passes through a mesh which receives aerosol precursor from a reservoir, so that, as the air passes through the mesh, the aerosol precursor on the mesh is atomised. The atomised aerosol precursor sprays from the mesh onto a heater which heats and vaporises the atomised aerosol precursor to form a mixture of vapour and air in the air duct at the heater. The mixture of vapour and air may then be drawn to the mouthpiece through the air duct. Thus, the user may receive a mixture of air and vapour by drawing air through the air duct. The heater receives a spray of atomised aerosol precursor, thereby making vaporisation of the aerosol precursor straightforward. There may be a wick between the reservoir and the mesh for regulating the transfer of aerosol precursor from the reservoir to the mesh.
