A new study published by researchers at the University of Rennes in France shows that epileptic seizures produce a distinct body odor profile that can be detected by dogs, opening up the possibility of training the animals to predict (and warn their owners about) these types of seizures.
Catala A, Grandgeorge M, Schaff J-L, Cousillas H, Hausberger M, Cattet J. Dogs demonstrate the existence of an epileptic seizure odour in humans. Scientific Reports. 9: 4103, 2019.