little girl sleep to hug teddy bear in the bedroom was prevented from virus with dust by air conditioner

airfiltration airpurification airpurifier serene clean freshair fine electronic filter dust germ healthy home house hygiene allergy bed bedroom bedtime breath architecture bubbles character child children corona coronavirus covid covid-19 design indoor interior omicron prevention protect protection relaxing room safety sleeping technology vector virus background bacteria pm25 little girl sleep hug teddy bear prevented air conditioner