A volatile composition dispenser comprising: a housing comprising a rear frame having a frame opening; a push button movably disposed within the frame opening; and a cartridge aligned with the push button, the cartridge comprising a container having an orifice and containing a volatile composition, a rupturable substrate sealably attached to and covering the orifice, and rupture elements adjacent the rupturable substrate; and a resilient member aligned with the push button and the rupture elements; a rupture mechanism positioned adjacent to the rupturable substrate; the rupture mechanism comprising a movable member movably attached to an outer frame by a resilient member; to: upon receiving a pressure on the push button, move the movable member relative to the outer frame through flexing of the resilient member to store energy and move the rupture elements into a first position in which the rupture elements engages with the rupturable substrate; and upon removing the pressure from the push button, to exert a force on the push button and move the rupture elements into a second position in which the rupture elements are not engaged with the rupturable substrate; the volatile composition dispenser further comprising: an inner wall having a proximal end at a periphery of the frame opening and a distal end extending into the opening; a gap between a button body of the push button and the inner wall; and a protrusion disposed at the distal end (41, 23) of the inner wall or the button body, wherein the protrusion is arranged within the gap. a housing comprising a rear frame having a frame opening; a push button movably disposed within the frame opening; and a cartridge aligned with the push button, the cartridge comprising a container having an orifice and containing a volatile composition, a rupturable substrate sealably attached to and covering the orifice, and rupture elements adjacent the rupturable substrate; and a resilient member aligned with the push button and the rupture elements; a rupture mechanism positioned adjacent to the rupturable substrate; the rupture mechanism comprising a movable member movably attached to an outer frame by a resilient member; to: upon receiving a pressure on the push button, move the movable member relative to the outer frame through flexing of the resilient member to store energy and move the rupture elements into a first position in which the rupture elements engages with the rupturable substrate; and upon removing the pressure from the push button, to exert a force on the push button and move the rupture elements into a second position in which the rupture elements are not engaged with the rupturable substrate; the volatile composition dispenser further comprising: upon receiving a pressure on the push button, move the movable member relative to the outer frame through flexing of the resilient member to store energy and move the rupture elements into a first position in which the rupture elements engages with the rupturable substrate; and upon removing the pressure from the push button, to exert a force on the push button and move the rupture elements into a second position in which the rupture elements are not engaged with the rupturable substrate; the volatile composition dispenser further comprising: an inner wall having a proximal end at a periphery of the frame opening and a distal end extending into the opening; a gap between a button body of the push button and the inner wall; and a protrusion disposed at the distal end (41, 23) of the inner wall or the button body, wherein the protrusion is arranged within the gap.