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● ARCHIVED SPECULATIVE DESIGN OLFACTORY HCI

Aura Mist

An olfactory HCI inquiry into mood and North-Indian ritual.

FOCUS

Olfactory HCI · Affective Computing · Design Futuring

METHODS

Survey · Ethnography · Speculative Workshop · Reflexive Thematic Analysis

PARTICIPANTS

150 survey responses · 9 workshop participants
MOOD REGULATION SCENT RITUAL CARE NORTH-INDIAN DOMESTIC PRACTICE

Can a room help you regulate a mood by changing the air around it, not charting it?

That was the question. I did not build and test a device. But nine people in a workshop showed me something I did not expect: when an interface names your mood, it stops helping.

A hypothesis, not a proof, and the part I would defend.

The problem

The bet

What I did

01

Survey

A self-reported directional survey with 150 responses. It used week-long recall and no validated scale. It mapped the spread and pointed me toward scent.

02

Ethnography

I watched how students actually regulate mood and saw scent rituals already in use. They either try and eat something or go for a Nature walk. Inbedding hidden in these rituals which surfaced by them were smell and sound. These observations, with my own background, became the Ritual cards.

03

Speculative workshop

A futuring card deck: Future, Emotion, Trigger, Ritual, Modality, adapted from Ceylan Beşevli's acoustophoresis work.

04

Analysis

With consent, and prior information given to the participants, I recorded and transcribed each session, then ran reflexive thematic analysis.

The workshop included 09 students, 04 girls, 05 boys; 06 B.Tech, 02 M.Tech, 01 PhD, from mixed ethnic and religious backgrounds, in three groups.

I designed this, and I already believed ritual was the answer. I read those transcripts with that bias, and tried to flag where it shaped what I saw.

One card draw

FUTURE

In a

HOSTEL

future

A future of solitude, and quiet end to the day.

EMOTION

A state of

NUMBNESS

The user does not want diagnosis, only a gentle way to pause.

TRIGGER

Shaped by

SELF-DOUBT

Academic pressure, and the feeling of not being enough.

RITUAL

Marked by

DIYA (Lamp)

A domestic ritual object used to mark closure, stillness, and intention.

MODALITY

Through

LIGHT + SCENT

Warm light and soft olfactory cues create an ambient response.

Futuring card method adapted from Ceylan Beşevli et al.’s SONARIOS paper, using card combinations to generate speculative interaction scenarios.

The idea: a lamp you light at the end of a bad day. It never asks how you feel. Lighting it is the message, the day is over. Warm light rises, a faint sandalwood follows, then it dims itself.

Not to cheer you up. To give permission to stop.

That one draw seeded both scenarios, and the hypothesis below.

What the workshop showed

Two themes carried the most weight.

THEME 01

The Pause Before Response

A gap between trigger and reaction. The logic of mauna, of sandhya (mediatation).

THEME 02

Closing, Not Fixing

Marking an end, not inducing a feeling. The logic of the diya, of raga samay (Hymns), ragas bound to the hours.

What struck me: the rituals were mine, but their logic travelled. Most of the room did not practise them. They engaged anyway.

"I don't do this at home. But ending the day on purpose, that I can use use."

And the thing I did not expect: every group recoiled when a scenario labelled the mood. One person, mid-exercise, said:

"Don't tell me it's sad. Just let me light it."

So the hypothesis: the interface should stay unnamed. Do not classify the mood. Do not title the scent. Do not narrate. In scent, silence may be the mechanism, not a missing feature.

A risk it raises: smell is personal. A "calming" sandalwood is, for someone, the smell of a funeral. So the user picks the scent. The system never assigns it.

Aura Mist workshop notes translated into themes, interactions and design implications
Workshop notes translated into themes, interaction logic, and design implications.

Two scenarios

SCENARIO 01

The Pause

Back from a hard call. One tap, wet mitti scent, warm light, mist in short pulses. Nothing labelled, nothing notified. Ten minutes before you face anyone.

Buildable now. The catch is latency, smell lingers, so timing a pause is harder than timing a light.

SCENARIO 02

The Evening Raga

Fourth night of exam week. The app reads rhythm of your responses, never mood: focus mode, every night, past midnight. At dusk it offers to close the day. Light dims, mist slows, scent shifts citrus to sandalwood. One question: continue, or pause?

Buildable now on the digital side. The hard part is the mapping, which scent, which hour and also to collect the rhythm.

The system never infers your emotion. You choose; it nudges from time and use.

The honest question

The research itself is the warning. People numb with tobacco and alcohol. They snap at the people they love. Same move, changing your state to dodge a feeling, gone wrong.

So does an atmosphere device help you transition, or just help you avoid? I do not know. That is the deeper question, and it needs a longer study than I have run.

"Close the day, don't escape it" is an intention, not a result.

What I learned

Where it points

A step, not a result.

The next study is small, and tests the one claim I would defend: a Wizard-of-Oz of The Pause, one version that names the mood, one that stays silent, and which one people come back to. I would watch hard for the demand effects a faked device invites.

Aura Mist is not trying to fix a mood. It is trying to make room for one, and to know which claim it can stand behind.
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