 Scientists are very comfortable saying things like, there's one researcher who is a very sober researcher who pooh-poohs a lot of the plant intelligence stuff, but he's famous for saying, the smell of cut grass is the plant screaming. Because it is. The smell of a sweet flower is the plant flirting with pollinators. The smell of something that's been cut is the plant exuding defense compounds that might be taken up by nearby plants so that they too can mount a defense.