Perfume is fragrant liquid used to give people and objects a pleasant smell.
A perfume called Eau d'Snail was once the most popular perfume on Ferenginar. (DS9 reference: Legends of the Ferengi)
Jadzia Dax wore a perfume which smelled like Andorian wildflowers and the flowering plankton of Cilas XII. (DS9 novel: Devil in the Sky)
A perfume from Gil'Tarkna was likely used to infect Dr. Jennifer Almieri with a mitochondria poison, which led to her death. (CoE eBook: Ghost)
Deanna Troi wore a Risian perfume which was a favorite of hers. It had a pleasant scent. (TNG novel: A Time to Sow)