香りと体・環境

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.
The Science of Scent

Does Perfume Change the Air Around Your Skin?

Do perfumes and lotions also change reactions in the air around the skin? Measurements in an occupied chamber and models trace the roles of ethanol, skin oils, and time since application.
The Science of Scent

Can Flameless Fragrance Products Still Create Airborne Particles?

Simply warming scented wax can generate tiny particles through reactions in the air. Measurements in a test house help explain particle numbers, ventilation and estimates of respiratory exposure.
The Science of Scent

What Does a Fragrance Capsule’s “Biodegradation Percentage” Measure?

What happens if fragrance remains inside capsules during biodegradation testing? A comparison of purification methods shows how materials tested alongside the shell can greatly change the apparent result.
The Science of Scent

What difficulties do people with asthma report with fragranced products?

A US online survey asked people who self-reported asthma or an asthma-like condition about symptoms and everyday difficulties associated with fragranced products. Here is what the survey can, and cannot, tell us.
The Science of Scent

Which Molecular “Scissors” Turn Odorless Sweat Precursors into Body Odor?

PepV removes glycine from an odorless precursor before PatB releases 3M3SH. Laboratory findings clarify a pathway, not a tested deodorant.
The Science of Scent

Could Nasal Mucus Help Explain Age-Related Changes in Smell?

A proteomic study identified 2,987 proteins across 24 participants and explored differences by nasal location, age, and olfactory sensitivity.
The Science of Scent

How Are Fragrances Linked to Migraine in a Patient Survey?

A survey of 101 Japanese migraine patients found reported associations between attacks and odors including perfume and fabric softener. What does grouping odors into six categories reveal, and what is needed to investigate causation?
The Science of Scent

How Are Workplace Fragrances and Asthma Reported?

What did California surveillance record about workplace fragrances and asthma? We examine the 270 cases, the denominator behind 3.8%, the study's limitations, and the authors' prevention proposals.
The Science of Scent

How much do fragrance diffusers change the air in our homes?

How much does a fragrance diffuser change the air in an occupied home? Measurements in 60 UK households showed that existing sources and ventilation, as well as product emissions, influence how clearly a change can be detected.