Truth is, is that you're really not altogether wrong as I have heard that evil is repelled by certain scents.
Burning sage is an effective smudge and I seem to recll that burning myrrh resin is efective as well but it would be relatively expensive to smudge an entire house with it.
Myrrh was an ingredient of Ketoret, the consecrated incense used in the First and Second Temples at Jerusalem, as described in the Hebrew Bible and Talmud. An offering was made of the Ketoret on a special incense altar and was an important component of the Temple service. Myrrh is also listed as an ingredient in the holy anointing oil used to anoint the Tabernacle, high priests and kings.
Oil of myrrh is used in Esther 2:12 in a purification ritual for the new queen to King Ahasuerus.
Myrrh is mentioned in the New Testament as one of the three gifts, along with gold, frankincense, which the magi "from the East" presented to the infant Yeshu'a (Jesus, if you prefer.) Myrrh was also present at Yeshu'a's death and burial and was offered wine and myrrh before the crucifixion. According to John's Gospel, Nicodemus and Joseph of Arimathea brought a 100-pound mixture of myrrh and aloes to wrap his body.
Chrism, also called myrrh, myron, holy anointing oil, and consecrated oil, is a consecrated oil used in the Anglican, Armenian, Assyrian, Catholic and Old Catholic, Eastern and Oriental Orthodox, and Nordic Lutheran Churches in the administration of certain sacraments and ecclesiastical functions.
From wikipedia, the following.
"The English chrism derives from Koine Greek via Latin and Old French. In Greek, khrîsma (χρῖσμα) was originally the verbal noun ("(the act of) anointing," "unction") of χρίειν ("anoint").[1] By extension, along with khrîma (χρῖμα), khrîstai (χρῖσται), and later khrísma (χρίσμα), it came to be used for the anointing oil or ointment itself. Khrísma came into Latin as chrisma, which appears in the works of Tertullian. This was adopted directly into Old English as crisma, which developed into Middle English crisme and various related spellings."
It is also mentioned in the Torah in Exodus 30:22-29
"Moreover the LORD spoke unto Moses, saying:Take thou also unto thee the chief spices, of flowing myrrh five hundred shekels, and of sweet cinnamon half so much, even two hundred and fifty, and of sweet calamus two hundred and fifty,and of cassia five hundred, after the shekel of the sanctuary, and of olive oil a hin.
And thou shalt make it a holy anointing oil, a perfume compounded after the art of the perfumer; it shall be a holy anointing oil.
And thou shalt anoint therewith the tent of meeting, and the ark of the testimony,and the table and all the vessels thereof, and the candlestick and the vessels thereof, and the altar of incense,and the altar of burnt-offering with all the vessels thereof, and the laver and the base thereof.
And thou shalt sanctify them, that they may be most holy; whatsoever toucheth them shall be holy."
An interesting side note is that in 1936 Sula Benet, a little known Polish etymologist from the Institute of Anthropological Sciences in Warsaw. declared that the word kaneh-bosm has been mistranslated as calamus, a common marsh plant with little monetary value that does not have the qualities or value ascribed to kaneh-bosm. The error occurred in the oldest Greek translation of the Hebrew Bible, the Septuagint in the third century BC, and was repeated in the many translations that followed. I read that He demonstrated that the word for cannabis is kaneh-bosm, also rendered in traditional Hebrew as kaneh or kannabus. The root kan in this construction means “reed” or “hemp”, while bosm means “aromatic”. This word appears five times in the Old Testament; in the books of Exodus, the Song of Songs, Isaiah, Jeremiah, and Ezekiel.
Also frankincense, which is a dried sap from a plant closely related to the myrrh tree, when burned, I've read, emits a holy smoke and it's fragrance is known to clear negative energies, connect us with the our higher consciousness and spiritual realms and surround us with high vibrations. The smoke is also used to heal, balance and protect our physical and energetic bodies. Burning the resins has the power to transform and deflect unwanted energy, bless a space as sacred and connect you to your higher Self.
A study done in 2008 concluded that the smoke has psychoactive properties too.
I also remembering reading somewhere that it's supposed to attract the angelic I was unable to find any reference to that on the internet but I only did a quick search.
Also Benzoin, pinyon pine, copal and amber are used for clearing negative energy from a room in addition to what other attributes are assigned to them.
I would use them in tandem with mantra and, or, prayer for protection for the very reason one should get all the protection that one possibly can.
Cool.
I can't like posts on mobile, but man that had me laughing. 
