Gymnadenias have a reputation for giving off a faint vanilla scent and this species is no exception, although sometimes the flowers can be odorless.

Gymnadenia odoratissima will be very difficult to differentiate apart from a more pronounced odor and a smaller size. In the field therefore, unless you have 2 populations to observe in parallel, naming one and the other requires measuring the flowers. The other morphological differences are quite subtle and relate to the size of the flowers, the shape of the labellum in particular. The distribution area being included in that of Gymnadenia conopsea , this complicates the task even more.