Mosquitoes do not sense the magnetic fields of humans, or at least there are no studies showing that it does. They sense the earth's magnetic field and also the chemicals on human skin.
Effects of magnetic fields on mosquitoes.
Department of Entomology, Walter Reed Army Institute of Research, Washington, DC 20307-5100, USA.
Abstract
Phylogenetically diverse organisms, including some insects, are able to detect and respond to magnetic fields comparable to the Earth's magnetic field. Because of their tremendous importance to public health, mosquitoes were tested for the presence of remanent ferromagnetic material indicative of a biological compass and also tested for behavioral responses to magnetic fields. Using a superconducting quantum interferometry device, we found that significant remnant was probably due to attraction of ferromagnetic dust onto the surface of live or dead mosquitoes. Most mosquitoes placed in a 1.0-gauss, uniform magnetic field moved until they were oriented parallel to the field. Two of 3 species of mosquitoes tested took fewer blood meals in a rotating magnetic field than in the Earth's normal magnetic field.
http://www.ncbi.nlm.nih.gov/pubmed/10901…
"People with high concentrations of steroids or cholesterol on their skin surface attract mosquitoes," Butler tells WebMD. Mosquitoes also target people who produce excess amounts of certain acids, such as uric acid. Any type of carbon dioxide is attractive, even over a long distance. So does the lactic acid from your sweat glands. Larger people tend to give off more carbon dioxide, which is why mosquitoes typically prefer munching on adults to small children. Pregnant women are also at increased risk, as they produce a greater-than-normal amount of exhaled carbon dioxide. Movement and heat also attract mosquitoes.
http://www.orkincanada.ca/en-ca/news/art…
Effects of magnetic fields on mosquitoes.
Department of Entomology, Walter Reed Army Institute of Research, Washington, DC 20307-5100, USA.
Abstract
Phylogenetically diverse organisms, including some insects, are able to detect and respond to magnetic fields comparable to the Earth's magnetic field. Because of their tremendous importance to public health, mosquitoes were tested for the presence of remanent ferromagnetic material indicative of a biological compass and also tested for behavioral responses to magnetic fields. Using a superconducting quantum interferometry device, we found that significant remnant was probably due to attraction of ferromagnetic dust onto the surface of live or dead mosquitoes. Most mosquitoes placed in a 1.0-gauss, uniform magnetic field moved until they were oriented parallel to the field. Two of 3 species of mosquitoes tested took fewer blood meals in a rotating magnetic field than in the Earth's normal magnetic field.
http://www.ncbi.nlm.nih.gov/pubmed/10901…
"People with high concentrations of steroids or cholesterol on their skin surface attract mosquitoes," Butler tells WebMD. Mosquitoes also target people who produce excess amounts of certain acids, such as uric acid. Any type of carbon dioxide is attractive, even over a long distance. So does the lactic acid from your sweat glands. Larger people tend to give off more carbon dioxide, which is why mosquitoes typically prefer munching on adults to small children. Pregnant women are also at increased risk, as they produce a greater-than-normal amount of exhaled carbon dioxide. Movement and heat also attract mosquitoes.
http://www.orkincanada.ca/en-ca/news/art…