Overall, technically you can use fusible interfacing in face masks. It will provide some filtration (to block out particles) and it's breathable.

What can be used as a filter in a face mask?

What face mask filters can I use? Some household items may work as a filter layer in a homemade mask, including: Paper products that you can breathe through, such as coffee filters, paper towels, and toilet paper. HEPA filters with multiple layers block small particles almost as well as N95 respirators, studies show.

Does interfacing count as a layer in a mask?

Yes. You need that non-penetrating layer. Woven interfacing is just like adding another layer of cotton.