Icelanders used to live in sod houses, and sometimes mold would grow on the insides of the walls. Way before penicillin was invented, people would take that mold from the walls and rub it on wounds to help them heal.
Icelanders used to live in sod houses, and sometimes mold would grow on the insides of the walls. Way before penicillin was invented, people would take that mold from the walls and rub it on wounds to help them heal.