Pellet substrates for vaporizing and delivering an aerosol

A method of forming an aerosol delivery agent for a vapor delivery device to vaporize an aerosol, the method comprising:

• providing a porous inert substrate in the form of a pellet having a plurality of exposed surfaces and selected from at least one of an activated carbon and an activated alumina;
• providing a liquid solution of an aerosol former and an aerosol agent selected from at least one of a therapeutic drug, a menthol flavoring, a tobacco flavoring, a tobacco powder, a tobacco extract, a dry plant material and nicotine;
• coating the substrate with a hydrated mixture comprising a film-forming food grade gum;
• admixing the substrate and the liquid solution together;
• allowing the liquid solution to adsorb onto the plurality of exposed surfaces of the substrate;
• allowing any excess of the liquid solution on the substrate to dry;
• and
• using the vapor delivery device to heat the substrate to a vaporization temperature of the aerosol former that is less than a combustion temperature of the substrate to vaporize the aerosol containing the aerosol agent.