Two fragrances combined not only smell wonderful , They are the two of the three gifts presented to the Messiah after his birth. (Gold Represents his kingship)
In the days of the temple,  incense containing Frankincense was placed on the Inner Altar of the Tabernacle and burned morning and evening. It speaks of intercession.  Myrrh, used as a burial spice and in purification rites, was a primary ingredient of the Holy Anointing Oil. It speaks of suffering and death, but our total deliverance in the atoning work of Messiah. Frankincense & Myrrh, two of the three prophetic gifts given to the Messiah at His birth, represent His role as Priest and Prophet, signifying all that Messiah does on our behalf.