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Each fragrance is infused with three natural ingredients — the synthetic molecules of aldehydes, alcohol from upcycled carbon emissions and water — to reach the “highest degree of olfactory clarity and expression.”

“It’s supposed to be the primary olfactory cortex.”

The Times asked readers to share the scents they consider synonymous with Los Angeles, and their responses painted a vivid olfactory portrait of the city.

They were unhappy with a report shared by the district that detailed “visual and olfactory inspections.”

Spraying insulin up the nose — where brain tissue reaches outside the brain, making up the olfactory bulb — improves cognition in people with early Alzheimer’s dementia and with mild cognitive impairment.