muscifuge

Etymology
From +, compare medieval Latin muscifugium, a fly fan.

Noun

 * 1)  Something which repels or kills flies, typically a plant; a fly repellent. Also spelled "muscafuge" (1844) by Henry Stephens, who claimed to have coined it.
 * 2) * 1882, anonymous, The Pharmacist and Chemist, Volumes 15-16, C.E. Southard, page 228:
 * Pharmacists who are plagued with flies in hot weather will be glad to learn that, according to the Moniteur des Produits Chimiques, the Ricinus sanguinis, a common ornamental foliage plant and own brother to the, is an effectual muscifuge.