Cubebine, from Java pepper, resembles the black pepper constituents. As quaternary compounds, they are poorly absorbed from the gut. Sinigrin is present in horse-radish as well as black mustard. Garlic contains several sulfurous compounds with antibacterial properties including allin and allicine. Butyl mercaptan and dicrotyl sulfide are the major odiferous principles in skunk spray.
Musks are exocrine compounds of mammals, used to mark territory or as pheromones.
These include muscone and exaltolide. Synthetic chemicals such as musk baur, which stimulate the olfactory receptors in similar ways, have been created for the perfume industry. Pellitorine is a plant insecticide. Oxidized fats, prevalent in fried foods, pose a health risk over the long term.