Scientists at Rothamsted Research in the U.K. have made progress in identifying which of the approximately 300-400 chemical odors produced by the human body attracts or repels insects (insects have very keen sense of smell they use to guide them to their prey).
Using two groups of test subjects, one 'attractive' to mosquitoes and one 'unattractive, the scientists were able to isolate and identify 7-8 distinct chemical odors which repelled mosquitoes. Some of these odors were thought to be related to stress.
Dr. Logan and his team have found only a small number of body chemicals—seven or eight—that were present in significantly different quantities between those people who were attractive to mosquitoes and those who weren't. They then put their findings to the test. For this they used a so-called Y-tube olfactometer that allows mosquitoes to make a choice and fly toward or away from an individual's hand. After applying the chemicals thought to be repellant on the hands of individuals known to be attractive, Dr. Logan found that the bugs either flew in the opposite direction or weren't motivated by the person's smell to fly at all.
The group's latest paper, published in March in the Journal of Medical Entomology, identified two compounds with "significant repellency." One of the compounds, 6-methyl-5-hepten-2-one, is a skin-derived compound that has the odor of toned-down nail-polish remover, according to George Preti, an organic chemist at the Monell Chemical Senses Center in Philadelphia, who is involved in a separate line of research into insect-biting behavior. The other, identified in the paper as geranylacetone, has a pleasant odor, though there is some question about whether the chemical is formed by the human biochemical process or is picked up in the environment, Dr. Preti says.
From the Upcoming ueue, submitted by Geekazoid.
(Illustration: Michael C. Witte)
Another factor that attracts mosquitoes, again based on my own observation, is sound. When I hum, the mosquitoes come to my face.
But where I live I couldn't care less if they bite me half dead - as long as the do it silent without their buzzing around my ears in the middle of the night anbd just let me sleep. I'll bother about the itch during daytime when I'm awake anyhow...
I did try the eating a clove of garlic method a couple of times when I knew I would be around a lot of them. I just swallowed a clove like a pill. The next day I had garlic farts, then for 2 or 3 days after that, the mosquitoes wouldn't come near me.
BZ, Business.
BZ, Belize.
BZ, Busy.
BZ, Blizzard.
BZ, Bronze.
BZ, Bautzen (german auto license plate).
BZ, Benzene ... Therefore I Am!!
Tee-hee.
It does have a lot to do with CO2 too. That's why often men attract more mosquitoes than women: they "exhaust" more CO2.
The answer was that studies had been made and came to the conclusion that people in general have this kind of smell that repel mosquitoes but some people, like me, are missing that smell and when near a swarm or individuals of mosquitoes we get the bites first and most of them.
:(