Hey, I wrote about something like this in a short story like six years ago, haha.
As you might expect, there has been a lot fewer studies and a lot less research done into smell and fixing smell issues than any of the other senses. That’s one issue why there really hasn’t been any development of this type of technology yet.
Another issue is that smelling is a lot more complicated, physically, than things like hearing or even seeing, just because it is a chemical sense and is a lot more “fine-tuned” in terms of its various components compared to vision or hearing.
But the idea that the concept is “on the radar” now, though, is pretty cool!
Maybe one day…