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We Induced Smells With Ultrasound

We Induced Smells With Ultrasound

23 comments

·November 21, 2025

krackers

I'd maybe make a hypothesis that a large portion of the space is "bad" smelling stuff: smoke or garbage. When people had covid-induced parosmia, it almost always seemed to be bad smelling stuff.

robrain

Still have it, intermittently. A sort of nameless-but-familiar "chemical" smell that comes and goes, along with any sense of taste. That is, I have bad days with no taste, just a chemical smell. Other days I have a pretty good sense of smell, generally with a good sense of taste.

Intriguingly some of the really unpleasant smells never get through to me - I could probably work at a sewage works now. Worryingly I have next to no ability to smell burning, though I do now get the smell of natural gas (or the additive used to make it smell).

teuobk

That was exactly my thought when reading the article and my personal experience with Covid. For a couple weeks, I perceived a persistent smell of something burning.

msuniverse2026

Reminds me of the vibration theory of olfaction.

https://en.wikipedia.org/wiki/Vibration_theory_of_olfaction

dr_dshiv

Does everything come down to waves or to bits?

Well, if it’s waves, perhaps principles of consonance and dissonance might apply. Robert Hooke thought so…

mmulet

This is exceptionally cool! It looks like this post isn’t getting much love though. I’ll see if I can get this post added to the second chance pool[1] and get it added to the front page!

[1]https://news.ycombinator.com/item?id=26998308

dang

Added! Thanks for requesting this.

All: if you seen a particularly good submission that has fallen through the cracks, please email hn@ycombinator.com so we can take a look and maybe put it in the second-chance pool (https://news.ycombinator.com/pool, explained at https://news.ycombinator.com/item?id=26998308), so it will get a random re-upment on HN's front page.

(Yes, it's permissible to request this for your own stuff, but we like it better when it's something you just ran across randomly and realized was interesting—as mmulet did in this case!)

comrade1234

I predict a future where once again porn is the cutting edge with a cutting edge technology.

porn + vr + smell

amarant

You're getting downvoted, likely for prudish reasons, but in all seriousness it doesn't seem unlikely that you're right.

The porn industry has historically been very quick to adopt new technologies, it's easy to see how this could benefit that industry, so it's a logical enough conclusion to draw. They'll very likely be the first commercial application of this, once viable.

kirini

Of course the HN creeps and perverts immediately fantasize about porn in a thread on some fascinating human biology research.

zoklet-enjoyer

You made this account to reply to my joke comment? Haha weird

efitz

The angle and position of the transducer would make them leveragable by future VR headsets.

droideqa

After we have Smell-O-Vision[0] we should work on the next big step for the internet:

<[SA]HatfulOfHollow> i'm going to become rich and famous after i invent a device that allows you to stab people in the face over the internet

[0]: https://en.wikipedia.org/wiki/Smell-O-Vision

nick__m

If they achieve their goals; I don't know of any tech company I would trust with a direct write access to my brain.

bqmjjx0kac

I shudder to think what capability the execute bit would grant.

cellular

Those few smells of extremes (garbage /clean air) make me think they are saturating the sensors.

polishdude20

I'm thinking it could be that we are very attuned to smelling bad smells because it's for safety.

polishdude20

What kind of probe are they using?

a-dub

that's an interesting mix of smells. i can't help but wonder if it's resulting from stimulation or the sensing of byproducts of the process itself.

zb3

I want it the other way - I want google "search this smell" feature..

zoklet-enjoyer

We are witnessing the dawn of smell-o-vision teledildonic VR tentacle porn

kirini

No-one wants to hear about your weird fantasies, creep.

zoklet-enjoyer

Definitely not my fantasy. Just a funny image of the future.