Sachet

(n.) A scent bag, or perfume cushion, to be laid among handkerchiefs, garments, etc., to perfume them.

Thesaurus Entries

atomizer, censer, fumigator, incense burner, incensory, odorator, odorizer, parfumoir, perfumer, pomander, potpourri, pouncet-box, purse atomizer, scent bag, scent ball, scent bottle, scent box, scenter, smelling bottle, spray, thurible, vinaigrette