Olfactory cell or scent gland
Explanation: It depends on the context. If we're talking about the sense of smell, then your guess about the analogy to taste buds is correct and the english term is an olfactory cell (you can google it). If we're talking about glands that animals have, such as at the anus of some mammals, that they use to secrete a scent (for marking territories, for example), then we're talking about a scent gland. Without knowing the context, I would guess the latter to be correct. Humans have them in their arm pits.
Example sentence(s):- Olfactory cells are extensions of the olfactory nerve, in the nose of mammals, that react to chemical stimuli.
- Many mammals have scent glands, for example in the anal area, that they use for secreting a fluid containing pheromones.
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