Disclosed herein are aspects of portable vaporizers and isolated vapor dispensers wherein material in the vapor dispenser is placed in the fluid pathway of heated air from a convection heat source such as a furnace. A printed circuit board in signal communications with temperature sensor controls the temperature produced by heating elements in the furnace. A rechargeable battery power supply is mounted in a body to supply power the heating element. The vapor dispenser is removable and may be disposable. A smell reducing accessory module reversibly mates with the body of the vaporizer.
