Freon gases are refrigerants and can pose serious health risks if inhaled for extended periods, so refrigerators with leaks should be repaired or disposed of carefully as soon as possible. Additionally, if there is insufficient refrigerant available, the refrigerator will not be as cold as is required for food hygiene.
Freon is not a singular chemical. It is a registered trade name for the chemicals used in refrigeration. Without knowing exactly which chemicals a particular refrigerator uses, it is hard to gauge the specific health implications of a leak. If there is a refrigerant leak, the owner should immediately contact a professional for advice and repairs.