aura

(noun) a sensation (as of a cold breeze or bright light) that precedes the onset of certain disorders such as a migraine attack or epileptic seizure.

(noun) an indication of radiant light drawn around the head of a saint. Synonyms: aureole, halo, nimbus, glory, gloriole.

(noun) a distinctive but intangible quality surrounding a person or thing. Synonyms: air, atmosphere. Examples: "An air of mystery." "The house had a neglected air." "An atmosphere of defeat pervaded the candidate's headquarters." "The place had an aura of romance."