Carved Ivory Rose Vinaigrette

Carved Ivory Rose Vinaigrette
Used to disguise terrible odors. The bottom screws off to add sponge/fragrance.
From the internet:
Vinaigrettes, popular from the late 18th century through the mid-19th century, were small containers used for holding various aromatic substances, usually dissolved in vinegar. A tiny piece of sponge, soaked in the liquid, was contained beneath a grill or perforated cover.