Sounds like the lubricating oil for the production machinery is getting into the candy. Probably in trace amounts, and probably harmless. Mineral oil is indigestible so it just passes through your digestive tract. You can buy it over the counter for use as, among other things, a laxative.
“You can buy it over the counter for use as, among other things, a laxative.”
My Mother, me, a tablespoon.
Petroleum jelly has been used as lubricant in food preparation/processing equipment for many decades…..obviously it has killed millions. /s