Here's why:
* Onomatopoeia is the formation of a word from a sound associated with what it refers to. Examples include "buzz," "meow," "crash," and "sizzle."
* "Spray" is a noun or verb describing the act of distributing liquid in a fine mist. It doesn't directly mimic a sound.
However, sounds associated with spraying *could* be examples of onomatopoeia:
* "Sshhh" or "Pshhh" could represent the sound of something being sprayed.
So, while "spray" itself isn't onomatopoeic, words describing the sound of spraying can be!