[Question] Should we all be more hygenic in normal times?

I’ve heard people say that this should be the trigger to be more careful about disease after the pandemic is over: e.g. people with mild colds shouldn’t leave the home without a mask, all big events should have hand sanitiser. One example is this opinion piece by Matt Ridley (content warning: politics). What’s the evidence on the cost/​benefit analysis of marginal hygiene in rich countries when a pandemic isn’t looming?