So, I also think politesse is really a critical skill and function in society. I've never smoked in close proximity to anyone without asking them if they minded if I lit up first. I also have never coughed on an airplane. Never. Not once. I've flown upwards of 200,000 miles in my life. I don't understand this urge people have to spread their germs as soon as they get seated and buckled in. I know the air is dry; control yourself. Really, try to control yourself.

So what you write is really the basic truth: Try to contribute to the wellbeing of people around you. That shouldn't be so hard.