I saw on the news a demonstration of spray coming out of people's mouths. It happened when they spoke. It looked to me like 1) covering a person's nose with a mask doesn't accomplish anything and 2) if people gestured, passed notes, etc instead if speaking it would be better, because even masks don't stop the miniscule covid particles. Even before seeing this when at work I have tried to not face people when I talk to them. I will say hello just after passing them in the hall, or ask a question while looking at my computer screen. Have you altered your speech patterns, or shut up in certain situations?