A vapocoolant dispenser, comprising: a housing having a first portion and a second portion coupled with the first portion defining a collapsible chamber; a container configured to contain contents under pressure, the container positioned in the housing; a valve member for selectively opening the container, the valve member comprising: an actuator portion configured to extend from the container; and a seal member sealably engaged with the container; and a stop member positioned in the second portion of the housing and configured to engage the actuator portion; such that when the collapsible chamber is collapsed, the actuator portion is engaged by the stop member, disengaging the seal member from the container for releasing the contents, wherein one of the first portion and the second portion has an inner perimeter of larger dimension than an outer perimeter of the other one of the first portion and the second portion, and wherein the first portion is configured to translate along a common longitudinal axis with that of the second portion so as to collapse the collapsible chamber, wherein the container is fixedly positioned in the second portion of the housing; a cover assembly is releasably attached to the second portion characterized in that the cover assembly comprises a prep pad having antiseptic; wherein the cover assembly comprises a rim configured to engage with tab members of the first portion and the internal surface of the cover assembly and the external surface of the second portion are formed with mating retaining members; and a rigid skirt integral within and extending about an annular edge of the second portion; wherein the cover assembly is released with the following mechanism: when the housing portion is depressed to begin the collapse of chamber, the tab members engage the rim and cause the retaining members to release such that the cover assembly is released from the second housing portion. a housing having a first portion and a second portion coupled with the first portion defining a collapsible chamber; a container configured to contain contents under pressure, the container positioned in the housing; a valve member for selectively opening the container, the valve member comprising: an actuator portion configured to extend from the container; and a seal member sealably engaged with the container; and a stop member positioned in the second portion of the housing and configured to engage the actuator portion; such that when the collapsible chamber is collapsed, the actuator portion is engaged by the stop member, disengaging the seal member from the container for releasing the contents, wherein one of the first portion and the second portion has an inner perimeter of larger dimension than an outer perimeter of the other one of the first portion and the second portion, and wherein the first portion is configured to translate along a common longitudinal axis with that of the second portion so as to collapse the collapsible chamber, wherein the container is fixedly positioned in the second portion of the housing; a cover assembly is releasably attached to the second portion characterized in that the cover assembly comprises a prep pad having antiseptic; wherein the cover assembly comprises a rim configured to engage with tab members of the first portion and the internal surface of the cover assembly and the external surface of the second portion are formed with mating retaining members; and a rigid skirt integral within and extending about an annular edge of the second portion; wherein the cover assembly is released with the following mechanism: when the housing portion is depressed to begin the collapse of chamber, the tab members engage the rim and cause the retaining members to release such that the cover assembly is released from the second housing portion. an actuator portion configured to extend from the container; and a seal member sealably engaged with the container; and a stop member positioned in the second portion of the housing and configured to engage the actuator portion; such that when the collapsible chamber is collapsed, the actuator portion is engaged by the stop member, disengaging the seal member from the container for releasing the contents, wherein one of the first portion and the second portion has an inner perimeter of larger dimension than an outer perimeter of the other one of the first portion and the second portion, and wherein the first portion is configured to translate along a common longitudinal axis with that of the second portion so as to collapse the collapsible chamber, wherein the container is fixedly positioned in the second portion of the housing; a cover assembly is releasably attached to the second portion characterized in that the cover assembly comprises a prep pad having antiseptic; wherein the cover assembly comprises a rim configured to engage with tab members of the first portion and the internal surface of the cover assembly and the external surface of the second portion are formed with mating retaining members; and a rigid skirt integral within and extending about an annular edge of the second portion; wherein the cover assembly is released with the following mechanism: when the housing portion is depressed to begin the collapse of chamber, the tab members engage the rim and cause the retaining members to release such that the cover assembly is released from the second housing portion.