In my experience, it's fortunately not too common. I disliked potpourri (headaches...) but the essential oil diffusers are so much worse.

I feel like people have scented things for as long as I can remember, but maybe how we're doing it has changed.

I personally like it when my home smells like "nothing," even when I come back to it after being gone a while. Smelling changes in humidity, level of dust, or anything else is pretty great.