If you have ever known a person who when they started sneezing, or coughing they would never cover their mouth whenever they kept doing this?
At the very least, these inconsiderate people should direct their sneeze or cough into a folded handkerchief, a paper towel, perhaps a heavy-duty napkin or even toilet paper or a tissue. Whenever, or wherever this happened, I wished I had brought a face mask with me;.
We should all bring one along to use if we happen to see people being cavalier about sneezing or coughing. Of course, a few days later you may wind up getting sick, and ruining half of your following week.
Stay away from these people. With friends like this, who needs enemies?