The Science of Scent

What Happens to Indoor Air When You Use Perfume or Sprays?

How do compounds released by perfumes and sprays change in air containing ozone? A 2024 experiment involving five products sheds light on secondary products and particle formation, and on what remains unknown about health effects.

2026.11.03

The Science of Scent

Does Sleeping with a Favorite Scent Make Dreams Feel Better?

Choosing a scent that evokes pleasant memories and sleeping in a room scented with it: in a sleep experiment involving 20 people, no improvement in dream emotions or mood immediately after awakening was confirmed. The study explores the difficulty of influencing dreams even when personal scent preferences are considered.

2026.11.03

The Science of Scent

Can Similar Vanilla-Like Aromas Elicit Different Brain Responses?

Different responses in some brain regions were reported even for three vanilla-like odorants rated similarly for intensity, pleasantness, and familiarity. A 44-person fMRI study helps distinguish aroma ratings and brain activity from interpretations concerning memory.

2026.11.03

The Science of Scent

Should Room Fragrance Run Continuously? A Study of Intervals and Comfort

Does keeping a room fragrance running make it more pleasant? A study comparing sweet orange essential-oil diffusion intervals separates scent perception and preference from performance on attention tasks.

2026.11.03

The Science of Scent

Jasmine Flowers and Absolutes: What a Comparison of Four Species Reveals

Fresh jasmine flowers and the perfumery material known as an absolute: a comparison of four species grown in Egypt explores differences associated with species, harvest month, and extraction method.

2026.11.03

The Science of Scent

Does Vanilla Smell Different Depending on Where and How It Is Cured?

Even within a recognizably vanilla aroma, there are different expressions of fruit, rum, and wood. A study in which 62 people smelled pods from four regions of Mexico explores the relationships between traditional processing, aroma preferences, and the condition of the pods.

2026.11.03

The Science of Scent

Can Aroma Change the Astringency of Wine?

Fourteen people evaluated 74 red wines and their corresponding deodorized samples. The study examines how aroma relates to the nuances of astringency, sweetness and bitterness, and the relationship between composition and mouthfeel.

2026.11.03

The Science of Scent

Are There Measurable Clues to an Aroma’s “Roundness”?

Are the shapes and colors people associate with aromas linked to instrument measurements? This article introduces a study comparing ratings from 68 people with electronic-nose measurements of 10 fragrance materials.

2026.11.03

The Science of Scent

Are Familiar Scents Better Memory Cues?

Can a familiar scent help us recall newly learned information? Three experiments pairing odors with shapes explore the relationship between familiarity and memory.

2026.11.03

The Science of Scent

Why Does an Odor-Tracking Drone Pause Along the Way?

Is detecting an odor enough to fly to its source? A study of a drone carrying a real silkworm moth antenna shows how an air-intake enclosure and pauses during rotation help it follow an odor.

2026.11.03

The Science of Scent