Ключевые слова: air, airborne emissions, bacteria, biology, body, breathed, community ecology, corynebacterium, direct contact, ecosystem, evolution, fungi, health, healthy, human, lungs, microbe, microbial cloud, microbiologist, microorganisms, millions, mouth, natural, organisms, population, propionibacterium, sciences, skin, skin bugs, skin cells, streptococcus, viruses,