Figure out ways to get other people to actually wash hands and actually stop touching their face. This is a widespread problem. Most people are oblivious to how unclean their habits are.
Random ideas:
Promote tech that reduces germ proliferation, such as self checkout, sliding doors and hot air hand dryers.
Create a company to train cashiers to stop touching their damn faces and stop licking their fingers to help open bags.
Create one of those apps for changing your bad habits and make it all about Coronavirus and prevention and getting people to wash hands, stop touching their face, etc.
There is lots you can do. The primary sticking point currently is the lack of sufficient adoption of the best practices listed by every major health organization and repeated ad nauseum online, only to be routinely ignored in actual practice. Adoption of best practices is not a solved problem by any stretch of the imagination.