A container, such as a bottle or jar, that includes a closed compartment and an active insert device for pressurizing the closed compartment. The active insert device comprises an elastic liner and an active insert that are affixed to a closure or cap or the container. The active insert includes at least one reactant that is triggered to a reaction by an external energy source. The reaction produces a gas, which is delivered to the closed compartment via the liner. The gas causes the liner to expand and open a passage to deliver the gas to the closed compartment.