How to make cloth face mask with a filter pocket, where to buy face mask filters and stuff from around the house to use in mask filters, like coffee filters.

Adding an extra layer or two—especially a HEPA filter, coffee filter or any other kind of material designed to catch tiny particles—can also greatly increase the mask’s capability as a filter.

Experts recommend using coffee filters, reusable fabric grocery bags, nylon pantyhose, and even certain HEPA filters as a filter for fabric face masks.

A Melitta face mask in Brooklyn on May 6, 2020. Melitta, the German maker of the original paper coffee filter, retooled its production to make masks. By The New York Times UPDATED: May 11, 2020 at ...

Coronavirus Study finds multiple layers of coffee filters do filter COVID-19 virus Researchers studied the effectiveness of one, two and three layers of coffee filters.

Melitta, the German maker of the original paper coffee filter, retooled its production to make masks. A director called the filter’s perfect fit over the face “a gift from heaven.” ...