I know from a beekeeper that raw honey taken daily is an old German folk medicine for allergies. You are getting local pollen in a daily dose. Vinegar is made with molds? So, perhaps it does the same thing for mold allergies. So, my guess is a folk medicine treatment for allergies.
"This is for all you new people: I only have one rule. Everyone fights.
No one quits. You don't do your job, I'll shoot you. You get me?"
- Lieutenant Jean Rasczak