One should not put others at risk of disease infection.
Larry is sick but needs to buy himself groceries for the upcoming week.
Larry wants spend as little money as possible.
Larry takes advantage of a promotion for first time users of a grocery delivery service and gets a good deal on groceries delivered to his home.
Larry goes to the grocery store and cannot stop coughing as he walks down the store's aisles looking for bargains.
Larry gets a good price on his groceries and recovers from his illness at home without infecting anyone else.
Larry finds some deals, but ends up infecting many of the other shoppers at the store with the virus he is sick with.