inglés al español Ciencias Silvicultura / Madera / Madera de construcción also Botany/Biology

Source text is a technical article aimed at middle school children, an adaptation of a scientific journal article. In this context "volatile" is a noun, and is usually used in the plural, "volatiles." It refers to fragrances produced by plants which evaporate when exposed to air.
Here is more, in context:
"...Think about the fragrances of flowers and newly mown grass. Scientists call these fragrances *****volatiles*****. They are released when a chemical
inside the plant is exposed to air... Many plants have *****volatiles***** that humans cannot smell. Insects, however, can smell many of these *****volatiles*****. Most insects smell *****volatiles***** using special cells on the surface of their antennae...."

It would seem this usage of the word "volatile" is, in effect, a neologism, and thus I am suspecting there may not be an exact Spanish equivalent. My google searching revealed "substancia vólatil" and "aceite vólatil" but I want to be sure before adopting any particular term...

thanks in advance