This study states that “alternatives” like silk and gauze etc could possibly be good options in the pandemic. It’s done on starch particles.
Does not state how big they are either, but they can still get through the material and my research points out that starch particles are “big”, much bigger than most viruses.
Study article: https://pubmed.ncbi.nlm.nih.gov/32503823/ Lifesite
As we highlighted earlier, Obama will stage the mass gathering despite a nearby outbreak of the COVID-19 delta variant in Provincetown.
Guests will include Oprah Winfrey, George Clooney, and Steven Spielberg along with around 200 staff to service the privileged attendees.
Mark Steyn summed up the hypocrisy of the occasion when he told Tucker Carlson, “I couldn’t go to granny’s 90th birthday but it’s perfectly fine for Barack Obama to have 500 people because our rulers are so much better than us.” NW