Reminds me of the story/tale about Thieves spices and oil mixture. Named after the thieves who robbed victims of the plague (gold teeth, etc.) and supposedly never caught the disease themselves....due to the spice mixture they protected themselves with.
The story goes that the thieves were eventually caught, but were told they wouldn’t be jailed if they gave up their secret of not getting the illness.
You can buy this mixture of essential oils called Thieves Oil online. The people who devised the formula used it during the plague allowing them to steal from houses with plague victims without getting sick. I bought some during the ebola scare, but not sure if it would work.