Of different natures, light and sound do not mutually interact.
My experiment with spike-lavender, naphthaline, and other odours seems to prove that odour proceeds from two sources.

For emission substitute undulation, and the problem of the Great Peacock moth is explained.
Without any material emanation a luminous point shakes the ether with its vibrations and fills with light a sphere of indefinite magnitude.
So, or in some such manner, must the warning effluvium of the mother Oak Eggar operate.

The moth does not emit molecules; but something about it vibrates, causing waves capable of propagation to distances incompatible with an actual diffusion of matter.
From this point of view, smell would have two domains--that of particles dissolved in the air and that of etheric waves.[7] The former domain alone is known to us.

It is also known to the insect.

It is this that warns the Saprinidae of the fetid arum, the Silphidae and the Necrophori of the putrid mole.
The second category of odour, far superior in its action through space, escapes us completely, because we lack the essential sensory equipment.
The Great Peacock moth and the Oak Eggar know it at the time of their nuptial festivities.