Insects and Odors
How do insects smell fragrances? What attracts them to
Insects do not "smell" in quite the same way as humans and other mammals do.
They detect molecules in the air with their antennae, which is something
like the way our noses detect the molecules that we smell. Many insects use
molecules called pheremones for sexual attraction, these are molecules that
we can't smell at all. Mosquitoes apparantly can detect the carbon dioxide
in exhaled breath, which helps them find their targets for a blood meal.
There are many other cues for many different species of insects.
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Update: June 2012