What is the definition of Entity Fumes?

Entity fumes are like the invisible, unwelcome side effects of a particularly pungent and toxic entity that's been living in your home or office. Think of it as the unseen, unwelcome bystanders at a party who only complain about the food, but secretly cause a riot in the back room.

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Here's an unsettling example sentence: "After the 'Entity Fumes' workshop on toxic household gases, the once-peaceful office transformed into a no-gossip zone, with the only 'employee' being a perpetually sniffling, slightly irate plant named 'Fumey.'"