From Bald’s Leechbook, an Old English book of medicine. No mention of breath freshener, but you never know:
Wið earena deafe genim hryþeres geallan wiþ gæten hland gemenged, gedrype gewleced on þæt eare.
(For deafness of the ears, take cow’s gall mixed with goat’s urine, drip it lukewarm into the ear.)
Wið hreofle well on hlonde cwicrinde, ellenrinde niþewearde, æscrinde & wad, elmrinde, hemlic, do þonne buteran on & hunig.
(For a skin disease, boil in urine bark of rowan, the netherward part of elder bark, ash bark, and woad, elm bark, hemlock, then add butter and honey.)
Gif sio hreofol sie micel genim hlond, gehæt mid stanum, þweah mid þy hlonde swa hatum þæt hors.
(If the [horse’s] mange is strong, take urine, heat it with stones, wash the horse with the urine so hot.)
Gif mist sie fore eagum, nim cildes hlond & huniges tear, meng tosomne begea emfela, smire mid þa eagan innan.
(If there is a mist before the eyes, take a child’s urine and a drop of honey, mingle together in equal quantities, smear the inside of the eyes with it.)