<P> Smelling salts, also known as ammonia inhalants, spirit of hartshorn or sal volatile, are chemical compounds often used to arouse consciousness . </P> <P> The usual active compound is ammonium carbonate--a colorless - to - white, crystalline solid ((NH) CO). Because most modern solutions are mixed with water, they should more properly be called "aromatic spirits of ammonia". Modern solutions may also contain other products to perfume or act in conjunction with the ammonia, such as lavender oil or eucalyptus oil . </P>

What is the stuff dexter uses to wake up his victims