Incense
As Medical Treatment
Hadith - Sahih Bukhari 7.599, Narrated Anas 
that he was asked about the wages of the one who cups others. He said, -Allah's Apostle was cupped by Abd Taiba, to whom he gave two Sa of food and interceded for him with his masters who consequently reduced what they used to charge him daily. Then the Prophet 
said, 'The best medicines you may treat yourselves with are cupping and sea incense.' He added, 'You should not torture your children by treating tonsillitis by pressing the tonsils or the palate with the finger, but use incense.' "
Hadith - Sahih Bukhari 7.596, Narrated Um Qais bint Mihsan 
I heard the Prophet saying, "Treat with the Indian incense, for it has healing for seven diseases; it is to be sniffed by one having throat trouble, and to be put into one side of the mouth of one suffering from pleurisy." ...
[Similar narration in Sahih Bukhari 7.611]
Keeping the Mosques Clean and Scenting Them
Fiqh-us-Sunnah 5.132
Aishah said, "Perfume the Ka'bah, because this is a part of purifying it." Ibn Az-Zubair used to perfume the entire interior of the Ka'bah. He used to burn one pound of incense in the Ka'bah daily, but on Friday, he burnt two pounds of incense.
Fiqh-us-Sunnah 2.71
'Aishah reports that the Prophet ordered that mosques be built in residential areas and that they be cleaned and perfumed. This is related by Ahmad, Abu Dawud, at-Tirmidhi, Ibn Majah, and Ibn Hibban with a good chain. Abu Dawud's wording is: "He ordered us to build the mosques in the residential areas, to build them well, and to purify them. 'Abdullah would burn incense when 'Umar would sit on the pulpit."
Anas reports that the Prophet said: "The rewards of my ummah were placed before me, even for removing a speck of dust from the mosque." This is related by Abu Dawud, at-Tirmidhi, and Ibn Khuzaimah who calls it sahih.
Purchase incense from the Muslims and use it frequently to perfume the Masajid
- Treat pleurisy and throat problems with incense.