Girls can spray and do spray too. Particularly feisty females who want to send a strong message to their humans. Even nose-blind humans get the scent message when we spray. And there's something enticing about spraying on electrical items or even on electrical plugs.
They don't just give off a noise: they give off an interesting plastic warm-up smell, of which humans are totally unaware.
That said, spraying is the ultimate weapon. It's almost the equivalent of the nuclear option for humans. It doesn't hurt humans but it upsets them dreadfully and can ruin the cat-human relationship.
So just Turn off, tune out and drop into sleep.
PS. I adopted this motto from the l960s hippy one -Turn on, tune in and drop out. Hippies knew how to relax even if their drug problems were awful.