However,reported that fragrant incense, incense smoke, and cooking smoke are primary sources of indoor particles.The smoke and fragrance emitted from burning incense are not easily dispersed indoors.In addition to the 11,573 legally registered temples in Taiwan (a density of 1 temple per 2000 residents/262 ha), unregistered temples, altars, and household-scale worship tables are commonplace [2]. Therefore, burning incense has resulted in potential allergenic species existing in indoor environments.