Ключевые слова: adult, airborne, allergic, allergy, background, bloom, blossom, blossoming, care, caucasian, cleaning, cold, copy, flu, handkerchief, health, ill, infection, influenza, male, man, napkin, nature, nose, outdoors, outside, park, person, pollen, problem, respiration, respiratory, rhinitis, runny, sakura, season, seasonal, sick, sinus, sneeze, sneezing, snort, space, spring, springtime, suffering, symptom, text, tissue, tree,