It means he thinks you are lovely. that's a beautiful compliment, but it doesnt necessarily have to mean more than that. It means he secretly likes you and doesn't have the courage to tell you that he likes you to your face. could just be flirting to see what you're reaction would be like.
Medical air is also used during anesthesia as a substitute for nitrous oxide to reduce the high concentration of oxygen exposure. While the source of medical air may be a manifold with a bank of compressed air cylinders, most hospitals use a compressor system. This article will refer to installations with air compressors. An illustration of a typical medical air plant is provided for your reference throughout this article's discussion.
Rescue medications. are also called quick-relief medications. This means exactly what it sounds like: rescue meds are taken as needed for quick, short-term relief of symptoms. They are used to prevent or treat asthma attacks or sudden worsening of COPD symptoms during a flare-up. They open the lungs by relaxing the muscles of the airway wall.