Earlier quoted context omitted.
Expecting that people should control their sneezes is a ridiculous cultural norm.
Expecting sick people to not fill a room with hundreds of millions of aerosolized particles when that could be clearly avoided is a result of simple respect for those around you and evidence of manners and good breeding. Cover your sneeze. Cover your cough. Stay home when sick. These are kindergarten-level cultural learnings.
Genuine sickness yes, but a bit of a cold where half of the office can manage to soldier on? I reckon I ought to get some sort of bonus for the fact I stay in shape, eat well and haven't had a sick day in a few years.
Some people can't even avoid it because of their work, doctors receptionists for example.