aura

nouns

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
is a type of (narrower)
(medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease
an indication of radiant light drawn around the head of a saint
a distinctive but intangible quality surrounding a person or thing
"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"