I would keep industrial lubricants away from any food source or cooking utensile.
You can find data on stuff by typing in MSDS (Material Safety Data Sheet)
Cosmoline is not a recommended protein according to the manufacturer.
http://files.hubindustrialsupply.com/pdfs/msds-and-tds/065-021-055-msds.pdf
Material Safety Data Sheet
(COSMOLINE)
POTENTIAL HEALTH EFFECTS
INHALATION:............................Irritant
INGESTION:................................Irritant
SKIN (DERMAL):.......................Irritant
OVER EXPOSURE EFFECTS:.Inhalation: Causes irritation to the respiratory tract. Symptoms may include coughing, shortness of breath. Ingestion: Causes irritation to the gastrointestinal tract. Symptoms may include nausea, vomiting and diarrhea. Skin Contact: Causes irritation to skin. Symptoms include redness, itching, and pain. Eye Contact: Causes irritation, redness, and pain. Chronic Exposure: No information found. Aggravation of Pre-existing Conditions: No information found.