Lavender

A pleasant lavender vinegar is made by mixing six parts of rosewater, one part spirits of lavender, and two parts of vinegar. Or steep fresh lavender tops in vinegar for a week, shaking the mixture each day. At the end of the week, filter the lavender vinegar and store in airtight bottles. Also said to repel moths, flies, and mosquitoes, a folk formula for making a room-sized insect repellent is to absorb a few drops of lavender oil on a cotton ball, then suspend it from the ceiling.
  Lavender has always been highly prized for the fragrance of its blossoms and leaves, being used to perfume soaps, pillows, bath and toilet waters, and even the stuffing of chairs. Medicinally, lavender was used to revive a person from a faint or swoon!

http://www.american-farms.com/text_plant_pages/herbs.htm#Lavender