Insects in general have remarkable olfactory abilities, using their antennae for smell. Bees, for example, use odour recognition for communicating, perception of pheromones, toxins and… they can detect diseases.
Their olfactory system is one / ten-million times more acutely than a human's. Scientific research has demonstrated that bees have an extraordinarily acute sense of smell.
Inscentinel, in a study conducted with London School of Hygiene and Tropical Medicine, has shown that bees have the potential to be used as effective diagnosers of disease, among others.