Ключевые слова: adult, aerosol, air, asthma, asthmatic, breath, breathing, bronchial, care, caucasian, clinic, close, closeup, cough, difficulty, equipment, face, flu, health, illness, inhalation, inhaler, man, mask, medical, medicine, middleaged, nebulizer, oxygen, patient, portrait, respiratory, steam, therapy, treatment, up, vapor,