Vegetius, Digesta artis mulomedicinae 3.12.1-4
This composition of suffumigants repels bewitchment/the evil eye (fascinum), purifies (lustrat) an animal, chases daemons away, and removes/keeps away diseases; for the fume and breath (spiritus) of the odor, when it enters through the mouth and nostrils, penetrates to all the recesses of the organs very often cures places which potions cannot cure. Likewise, a cough in humans is healed with the vapor of suffumigants above all. Furthermore, the authorities of veterinary medicine (mulomedicinae) assert that the most desperate and dangerous diseases derive, not from faults in the fodder or the water, but from the corruption of the air. And therefore weakness which is induced by a pestilent wind is more easily cured by the salutory airflow of suffumigants.
Their composition is as follows:

essentially the same recipe as above

These ingredients are all dried and mixed together; when the need arises, you take one spoonful of this mixture and strew it over ‘live’ coals, and you suffumigate the animal with its head uncovered, so that it receives the fume through the mouth and nostrils. This suffumigant not only heals the troubles of beasts of burden, it also repels oncoming human diseases and hail, it scares off daemons and puts shades to flight.