The Secret of "Why Do Mosquitoes Only Bite Me?"... "Try Changing Your Soap"

Virginia Tech Neurobehavioral Research Team
Different Interactions Between Body Odor and Soap Cause Variations
Analyzing Components Affecting Mosquito Blood-Feeding Preferences

A study has found that switching soaps could be a way to reduce mosquito bites if you are particularly prone to them. However, since the interaction between an individual's body odor and soap varies, there may be differences from person to person.

A research team led by Dr. Cl?ment Vinauger, a neurobehavioral scientist at Virginia Tech, analyzed the effect of soap use on mosquitoes' blood-feeding preferences and published the results in the open-access journal iScience.

A study has found that if you are particularly prone to mosquito bites compared to others, switching your soap could be a solution.
[Photo source=Pixabay]

According to the journal publisher Cell Press, the team collected and analyzed the body odors of four volunteers and had them use four different soap brands?Dial, Dove, Native, and Simple Truth. The characteristics of the scents of these soaps were also analyzed.

The volunteers each had their own unique body odor, which was altered and supplemented by the scent added through soap washing.

The researchers collected body odor samples from the volunteers before washing and one hour after washing with each soap, then exposed these samples to mated female Aedes aegypti mosquitoes to analyze their attraction.

This was because only female mosquitoes feed on blood after mating. To exclude the effect of carbon dioxide (CO₂) exhaled by humans, which attracts mosquitoes, the team used fabric imbued with the volunteers' body odors instead of exposing the volunteers directly to the mosquitoes.

The results showed that washing with soap affects mosquito preference, but the degree and direction of this effect varied depending on the soap brand and the individual volunteer.

Native soap tends to repel mosquitoes

A study has found that if you are particularly prone to mosquito bites compared to others, switching your soap might be a solution. The photo is not related to the specific content of the article. [Photo by Pixabay]

The team found that washing with Dove and Simple Truth soaps, though not universally, made some volunteers more attractive to mosquitoes, while Native soap tended to repel them.

Dr. Vinauger, who led the study, said, "All the soaps tested contained limonene, a chemical known as a mosquito repellent, as a major component, but three out of the four increased mosquito attraction."

He added, "The ratio of chemicals is extremely important in attracting or repelling mosquitoes; even the same chemical can attract or repel mosquitoes depending on its proportion."

The researchers analyzed the components influencing mosquito blood-feeding preference and identified four and three chemicals, respectively, associated with attracting or repelling mosquitoes, including coconut-scented chemicals.

Dr. Vinauger said, "It was surprising that people who are usually more prone to mosquito bites when unwashed could be bitten more or less depending on the soap used. Personally, if I wanted to reduce mosquito attraction, I would choose a coconut-scented soap."

The team plans to increase the variety of soaps tested and conduct experiments with more participants to find general patterns or rules. They also intend to extend the duration of experiments to analyze effects lasting from morning washing through the evening.

This content was produced with the assistance of AI translation services.