Almost no one argues that apartment mold is somehow, dangerous to human health. But few people know that when its spores get into the body, they do not just begin to revive, gain strength and grow into vast colonies in excellent anaerobic conditions, at an optimal temperature and sufficient humidity. Along with this, they effectively stimulate cancerous mutations in cells. This conclusion reached by us specialists working in the field of human habitat safety. Having studied the main types of mold, which tend to inhabit the apartments of people, they discovered about a hundred toxic compounds with properties that provoke and develop oncology. The most dangerous toxins among them is aflatoxin, which provokes the development of oncology in the liver. Natural penicillin has a complex, coherent structure. They, like a sponge, absorb environmentally hazardous pollution and have a double or triple harmful effect on health, manifested in allergic reactions that affect the skin, cause asthmatic components and oncology of the respiratory and circulatory systems. Therefore, any “fluffy or slimy” scraps or spots found on appliances, wall surfaces, in the corners of rooms, and especially in an old refrigerator or on the surfaces of kitchen furniture, should be considered an emergency and a threat to safety and health. The most frequent calls to the ambulance team for exacerbation of bronchial asthma and severe allergic reactions in cities occur at night. People sleep on synthetic bed linens, permeated with invisible fungal fibers, and probably do not realize that these cells freely droop through the skin and grow into the tissues of internal organs. While sleeping, invisible mold affects: The vascular system; kidneys and urinary tracts (signs of cystitis are found); Respiratory systems; Joints (articulations) auditory and visual apparatus the brain.