Abstract: A non-powered insect repellent device can include a heating element, a removable cover, an insect repellent element, and a housing. The heating element can include a chemical compound configured to generate heating energy via an exothermic reaction. The removable cover can be coupled with a portion of the heating element. The portion of the heating element can be exposed to air with the removable cover at least partially removed from the heating element. The insect repellent element can emanate insect repellent solution in response to the heating energy. The housing can define a cavity, a first opening, and a second opening. Air can flow through the first opening to the heating element. The housing is configured to provide vaporized insect repellent solution through the second opening.

Abstract: In one aspect, an aerosol provision system is provided. The system includes an assembly defining an opening configured to receive a replaceable consumable and a removable member releasably engaged with the assembly. The removable member is configured to form part of an outer surface of the system, and is positioned so as not to obstruct the opening.