Reaction to bright light, for some (6)

I believe the answer is:

sneeze

(Other definitions for sneeze that I've seen before include "Nasal explosion" , "Blow air violently out through the nose" , "sign of cold > work by 3 [FRAYN]" , "Explosive sound from the nose" , "Audible and uncontrolled expulsion of air through nose and mouth" .)

I've seen this clue in the LA Times.

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