Oh, very funny Jerome.
Without being able to read and understand german writing.
From the signage posted, I think I understand the just of it.
If you don’t shake hands with your fellow pilots, and maintain a flying distance of 2 meters, and wash your hands before flying your PG, you should be safe?
Oh yah, if you’re feeling sick, stay home and seek medical help. You may have the dreaded mohockness?