Answer:
It would depend on what kind of infection this friend of mine has but I'll advise him to have a slight quarantine which is being separate from eating with his family, having his own pair of eating utensils (Plates, forks and spoons, and cups), stay hydrated as possible, practice hygienic protocols such as covering his mouth with his hand or bended elbow or handkerchief or tissue, using a tissue to release mucuses after coughing or sneezing (tissue is more advisable since it can be easily disposed unlike using handkerchiefs which is needed to be washed), wearing a surgical mask when in public since a cloth mask isn't that effective since 10% of bacteria can escape through the cloth and surgical masks are easy to dispose like tissues, washing his hands before and after eating, using sanitizers or ethyl alcohol often, and bathing with lukewarm water.
