Foodborne illnesses caused by viruses are mostly spread by each of the following except?

Foodborne illnesses caused by viruses are primarily transmitted through direct contamination from sources that include contaminated water, ill employees practicing poor hygiene, and individuals touching foods with their bare hands. These modes of transmission are linked to how viruses like Norovirus or Hepatitis A spread in food handling environments.

When cooling foods, the risk of spreading foodborne viruses decreases significantly as long as proper cooling methods and guidelines are followed. Proper cooling techniques are essential for slowing down the growth of bacteria and do not directly contribute to the spread of viral contamination. Therefore, cooling foods does not align with the primary transmission routes associated with viral foodborne illnesses, making it the correct response to the question.