The Beta Annari are a sapient race of reptilian humanoids, known for their extremely precise sense of smell.
Beta Annari are tough-looking humanoids with sharp teeth and scaly reptilian skin. They have 1,253 olfactory receptor genes, which enable them to literally smell lies. Their advanced olfactory sense allows them to detect whether another being is telling the truth, as well as the last thing that they've eaten and the last person they've had intercourse with.
- Star Trek: Picard, s01e05, "Stardust City Rag" (2020)