This might be a bit of a loose comment so forgive me as my posts are usually air tight. It's more of a hunch
But when going out to shops can you tell who has coronavirus and who hasn't? Good looking people are usually virus free
Whereas I sometimes see people walk with a jink in their step, have asymmetrical looking face, short in stature, fat, these people I suspect may be more likely to have coronavirus. Usually people will naturally social distance themselves from these ugly people so we should stop the spread naturally.