Our Prophet (peace be upon him) said in a hadith that the angel of mercy does not enter the house where there are dogs and pictures. [Muslim 2/200]
Through this hadith, we have learned that angels will not enter any place where there is a picture, be it a shop, a house, an office or any other place.
In many families the disease is contagious and this may be one of the reasons behind the disease. May Allah grant us all the tawfiq to stay away from this kind of sinful deeds.