Ключевые слова: air, backpack, breath, breathing, contaminated, damage, destroy, disease, environment, environmental, epidemic, face, flu, forest, freedom, garbage, generative, glove, happy, hat, health, health care, heavy, hiking, journey, lifestyle, looking, mask, medical, natures, outdoors, outside, person, poison, pollute, pollution, portrait, prevention, problem, protection, protective, recreation, safety, to the, training, virus, walk, walking, wearing, woman,