Smell as a UX Tool: The Next Leap in Product Experience
User experience design has long been dominated by visuals, sound, and touch. But a new wave of innovators is
User experience design has long been dominated by visuals, sound, and touch. But a new wave of innovators is exploring an unexpected sense with surprising power: smell. As screens saturate every corner of modern life, scent is emerging as a compelling way to create deeper, more emotional interactions. And for some, smell as a UX tool isn’t a gimmick—it’s the next big leap in product experience.
From wearable scent devices to ambient aroma systems, startups are building the hardware and software to bring scent into digital and physical experiences. The goal isn’t to replace what already works, but to add something brands and designers have overlooked for too long: the human sense of smell.
Why Smell as a UX Tool Is Gaining Traction
Smell is the only sense directly linked to the limbic system—the part of the brain that governs memory and emotion. That’s why a faint whiff of sunscreen can take you back to a childhood beach trip, or the smell of cinnamon can make a room feel instantly familiar. These reactions happen faster and more instinctively than those triggered by sound or sight.
Brands have leveraged this for years in physical spaces. Think luxury hotels with signature lobby scents or retailers that diffuse certain aromas to boost sales. What’s new is the idea of bringing smell as a UX tool into digital and hybrid environments—where it’s traditionally been absent.
For designers trying to build more immersive, emotionally resonant experiences, scent isn’t just novel—it’s effective.
Startups Leading the Scent Tech Movement
A growing number of startups are trying to make scent a viable part of everyday user interaction. One of the most prominent is OVR Technology, a Vermont-based company building wearable scent devices for virtual reality. Their hardware, ION3, releases carefully timed scents—like forest air or baked goods—to match visual and audio stimuli in VR environments. It’s already being used in wellness and training simulations.
In Japan, Aromajoin has developed a “smell speaker” that syncs scent release with video content. The system allows marketers, educators, and even game developers to layer scent into the storytelling process. Meanwhile, Moodify, an Israeli startup, is tackling a different angle—using scent to subtly influence emotions in physical environments like cars, hotel lobbies, and offices.
What ties these companies together is a shared belief that smell as a UX tool can elevate everyday interactions from functional to memorable.
The Complexities of Designing for Smell
Of course, building for scent isn’t as simple as changing a colour palette or adding a sound cue. Designers face unique challenges. For starters, scent delivery relies on physical materials—cartridges, diffusers, fans—not code. That means costs, maintenance, and storage logistics.
Scent is also highly subjective. Cultural differences can shape how a smell is interpreted, and even pleasant aromas can become overpowering or irritating if overused. There are also practical concerns: what if a user is allergic or sensitive to certain compounds? What happens when the scent lingers too long?
Creating scalable scent interactions requires careful planning—how strong the smell should be, how quickly it disperses, and how often it resets. The learning curve is steep, but the potential is real.
Where This Is Headed
As the technology improves and costs come down, scent may become a regular feature in consumer experiences. Imagine previewing a candle’s scent before buying it online. Or a meditation app that emits lavender when it’s time to wind down. There’s also growing interest in scent for healthcare, especially in memory care and emotional regulation.
Some researchers are developing scent-based cues to help Alzheimer’s patients recover memories or navigate routines. Others are exploring scent in trauma therapy and stress management.
For product designers, this opens up new creative frontiers. If smell as a UX tool can be delivered reliably and discreetly, it could become as essential to experience design as typography or sound design.
The Emotional Edge
In a market flooded with similar features and sleek interfaces, emotion is one of the last remaining differentiators. And scent might be the most direct way to create emotional resonance. It bypasses language, logic, and conscious filtering. It connects instantly.
Designers and entrepreneurs looking for the next edge in experience design should be paying close attention. Smell as a UX tool may not be mainstream yet—but it’s already showing that the future of user experience might be something we feel in our noses before we even notice it on a screen.
