highly aromatic gunpowder

Exploration Stage: South Fort
From: Fabien Delamode
Description: Every perfume sold in my atelier is one-of-a-kind, so as long as you know the identity of the "bitter fragrance" as described by Director Black, you should be able to easily find out the name of the woman who bought the perfume. However, please keep in mind that the special ingredients I use for my perfumes are a secret. First, please find an old gunpowder container.
Completed: Thank you for finding this old gunpowder container. The gunpowder adds a bitter scent to the perfume. It is a popular scent when Victory Day is approaching, so we have many of these perfumes in our atelier at that time of year.