The best option to use is a HEPA filter (make sure the filter you purchase is free of contaminants like fiberglass). There was a study done in 2013 that showed vacuum bags are nearly as effective as surgical masks at screening out bacterial and viral aerosols.
A few of our suggested options are: Vacuum cleaner bag, air conditioner filters, air purifier filters. Even coffee filters and other similar papers can work in a pinch. The key is you can’t just do cloth alone.
Look for these materials at hardware stores near you or online for delivery.
We have also partnered with a company called Think Crucial to help facilitate your search for safe filters. Order directly from them and receive 30% off your order. ORDER NOW