B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
16%
16% -- store visit increase rate for Dunkin Donut outlets near bus stops (South Korea) (2026)
Diffusing the smell of coffee on municipal buses in an experiment in South Korea led to a 16% increase in visits to Dunkin Donut outlets near bus stops.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
16%
Unit
Percentage
Data Vintage
2026
Entity
Geography
APAC
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
ambie.fm
Primary
Tier C
https://www.ambie.fm/blog/insights/improve-guest-experience-senses/ ↗
Source Article
How to improve your guest experience through their senses
Original Research
ambie.fm
· Original study ↗
Methodology
Experiment conducted in South Korea; details of sample not stated
Methodology documented
Segmentation
IndustryRetail
Company Sizesmb
RegionAPAC
Channelcontent
Cite this stat
Plain Text
Dunkin Donut outlets near bus stops (South Korea): 16% store visit increase rate. Source: ambie.fm (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/coffee-scent-bus-dunkin-visits-increase
HTML Embed
<blockquote cite="https://lighthousedata.io/data/coffee-scent-bus-dunkin-visits-increase" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>16%</strong> -- store visit increase rate for Dunkin Donut outlets near bus stops (South Korea)<br><small>Source: ambie.fm (2026) · <a href="https://lighthousedata.io/data/coffee-scent-bus-dunkin-visits-increase" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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