Koizumi began fusing art and aroma in 2011, tailoring fragrances to the 2D artwork, ceramic works, photographs, moving images, etc. in galleries. Koizumi practice includes workshops for creating aromas around artwork, customizing fragrances for artist groups and collaborating with cocktail designers for hotels. She produced event fragrances for "Tensai 108" at Zojoji Temple. Koizumi volunteers regularly with day care centers and earthquake relief efforts.