A portable hand-held device for emitting a volatile substance that includes a housing shaped to fit substantially within a standard-sized clothing pocket, the housing including a plurality of housing walls defining an interior chamber. The interior chamber includes a heating zone having a heating element and a portable electrical power source electrically coupled to the heating element. The portable electrical power source is formed as at least one battery. A volatilization zone having a volatile substance carrier with a volatile substance therein is thermally coupled to the heating zone and at least a portion of the volatilization zone is in fluid communication with an external environment surrounding the portable hand-held device. A thermally conductive plate is disposed between and in thermal communication with the heating element and the volatile substance and is operably configured to support the volatile substance carrier on a heated surface thereof
