Masks

My son says he thinks that, in the new world, people with colds and flu-like symptoms will be much more likely to wear masks while the symptoms persist.  Or at least some people.

In Asia, this was true in the before:

In Asia, it's considered good hygiene to wear a mask.  It's thought to be considerate of others.  It can even be stylish to wear a patterned mask.

Most of the 8,000 victims of the SARS outbreak in 2002-3 were in China and Hong Kong, so here's an example of a ratchet maintaining a good habit after it is no longer essential.  

Will that happen in other places, in the new world?

I hope my son is right.