You ever have nightmares where half the nightmare is remembering, rather than experiencing, something?

I had a nightmare where I remembered people keeping small carnivorous plants. They had narrow sticky stalks, and they big jaws like Venus Flytraps. But people couldn’t keep control of them, and in a few months they replaced all the other plants, and giant ones were swaying in the sky. And you couldn’t burn them because they’d release toxic gas, and there was a rumor that they could cloud and control your mind…

I think my nightmare *might* have something to do with allergy season, and with the nasty side-effects I had from cetirizine for the past few days.