You can catch flat warts by covering the quilt of a person with flat warts. Flat warts are a type of infection caused by the human papillomavirus. They may occur on the face, back of the hands and other parts of the body. The skin lesions are initially presented as pimples the size of a grain of rice, and gradually increase in size to flat pimples the size of a grain of beans, and the color can be skin color or light brown. Flat warts have a certain degree of contagious, through contact, the patient can attach the virus on the quilt, if the amount of virus is large, the contact person immunity is low, and there is a tiny break in the skin, it is easy to be infected with flat warts, this mode of transmission belongs to the indirect contact transmission. The actual quilt should be cleaned in a timely manner and the quilt should be exposed to the sunlight to eliminate the virus. It’s also recommended that you go to the hospital in time, under the guidance of the doctor, to avoid infecting others.