Room fragrance distributed via controlled residential ventilation. Who has experience?

Has anyone ever distributed room scents through a [Kontrollierte-Wohnraumlüftung]? What should be considered, it must not become overpowering! Do the ducts suffer from the fragrance oils?

I am of the opinion that this is quite common in the show houses.

I am of the opinion that this is completely normal in the model houses.

..and I found it really awful.. I left again with a coughing fit. I feel sorry for the people who have to work in such rooms. All artificial scents are strong chemicals. Where possible, you should simply avoid them... so no scent trees, no scented candles, no perfume, no laundry scent, room spray, etc. Spare yourself and your family. Regards Steffi.

Why would anyone want that? Showering helps or possibly [Duftkerze und Deo]

Sure, if you have such problems that you don't want to, but we or rather I don't have that. That's why I'm looking for information abroad, every hotel, every store is flooded with it, some smell strong, some smell good. So yes, my question is who has experience with what is normal and what is acceptable.

Why would anyone want that? Showering helps or maybe.. scented candle and deodorant

Scented candle is spatially limited, deodorant is nothing else. And thanks, I had forgotten about showering...

In hotels, it is usually distributed via local atomizers and not through the ventilation. Or atomizers in the ventilation system. I think the consumption will be very high since the air is constantly exchanged. For example, take a look at reima-airconcept