Incense
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Incense is an aromatic biotic material that releases fragrant smoke when burnt. The term is used for either the material or the aroma. Incense is used for aesthetic reasons, religious worship, aromatherapy, meditation, and ceremony. It may also be used as a simple deodorant or insect repellent.
Burning incense at the Longhua Temple
Smoke from incense sticks
Egyptian incense burner, 7th century BC
Some commonly used raw incense and incense-making materials (from left to right, top down) Makko powder (Machilus thunbergii), Borneol camphor (Dryobalanops aromatica), Sumatra Benzoin (Styrax benzoin), Omani frankincense (Boswellia sacra), Guggul (Commiphora wightii), Golden Frankincense (Boswellia papyrifera), the new world Tolu balsam (Myroxylon toluifera) from South America, Somali myrrh (Commiphora myrrha), Labdanum (Cistus villosus), Opoponax (
Insect repellent
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An insect repellent is a substance applied to the skin, clothing, or other surfaces to discourage insects from landing or climbing on that surface. Insect repellents help prevent and control the outbreak of insect-borne diseases such as malaria, Lyme disease, dengue fever, bubonic plague, river blindness, and West Nile fever. Pest animals commonly serving as vectors for disease include insects such as flea, fly, and mosquito; and ticks (arachnids).
A mosquito coil
A cowhorn container for mosquito-repelling pitch oil (a by-product of the distillation of wood tar) on display at the Nordiska museum, Stockholm.
A mosquito on a bottle of "natural" insect repellent
Insect repellent made with natural, plant-based active ingredients is less effective than conventional repellents