Where can I find Face masks in Fernwald?

Face masks can also be found in these cities:

Buseck Butzbach Giessen Hüttenberg Langgöns Lich Linden Lollar Mücke Pohlheim Rabenau Rockenberg Staufenberg Wettenberg Wetzlar

You can also find this in Fernwald:

Milk Baking Ingredients Beer Jam Vinegar Beef Spices Cocoa Normal Rolls Acid Preserves