Can't claim to be qualified to really give you the best answer here...
but two thoughts...
- silver soaked cloth may be a bad idea because the silver won't ever be "bound up" in the cloth and you may end up breathing in oxidized silver dust... Silver is a heavy metal. So... that could be 'all kinds of bad'.
- silver lined microfiber towels may provide a minute(my-noot) amount of action in a respiratory sense... but probably fairly small. i would guess that their density or coverage is minimal and just helps to prevent a contaminated damp cloth from turning into a moldy cloth blob (okay ... so they prevent microbes from spreading freely...bacteria and all... but again: they are designed for water/washing purposes more than air filtration).
if FASHiON is of no concern... two cross-layered microfiber towels will probably provide a decent amount of filtration. THey will probably catch any 'spittle' micro-droplets carrying COViD-19. Whether or not the silver content will be enough to neutralize all the captured COViD-19 is uncertain. But they will be pretty bulky.