Four Robbers Vinegar and Secret Ingredients

I have previously written about my visit to the wonderful ancient pharmacy of St Lizier. The guide for the apothecary had many tales to tell. One of the apothecary anecdotes refers to the famous four robbers vinegar and secret ingredients.
The story goes thus …
It was the time of a plague. A highly contagious, epidemic disease with a high degree of mortality. Characterised by high fever, often with delirium, swollen lymph nodes and infectious lungs.
Any unfortunate soul found dead during this plague had their body stripped by the four robbers.
Bizarrely the thieves never fell ill with this highly contagious disease!
Eventually the Sisters discovered the thieves’ identity. Following capture, their sentence was death. However, in exchange for their freedom they were asked to divulge their secret for plague protection.
And so, the four robbers secret ingredients?
Their secret was a strong smelling remedy of five medicinal plants in vinegar.
Those famous plague prevention plants ?
Thyme, rosemary, lavender, mint and sage.
I am not sure if they drank this vinegar remedy, or covered their skin and clothing in it. Perhaps a combination of the two?
All five plants grow wonderfully well in this region. A wonderful story. So it seems the four robbers vinegar and secret ingredients is no longer quite so secret.