The present study investigated the floral scent pattern and intensity of the floral organs in various species and cultivars of Maxillaria at different flowering stages using an electronic nose with 6 metal oxide sensors. The scents of species and cultivars showed various patterns overall, especially that of M. tenuifolia. The scent patterns of cultivars derived from M. variabillis formed a clustere that differed greatly from the origin M. variabillis. In M. tenuifolia, the scent pattern differed by stage, and was strongest at the initial flowering stage. Each floral organ showed different scent patterns; the sepal emitted the strong scent of all floral organs. This study establishes baseline data for the analysis scent of Maxillaria scents and for breeding aromatic orchids.