Magnum's Multi-Sensory Advert Sparks Commuter Discomfort at London Station
A controversial advertising campaign for Magnum ice cream that filled a busy London station tunnel with an artificial chocolate aroma has been adjusted following numerous complaints from passengers and transport staff who reported feeling nauseous. The so-called 'multi-sensory' installation, which also plays a cracking sound mimicking someone biting into chocolate-covered ice cream, was activated in the passageway connecting St Pancras railway station with King's Cross St Pancras Tube station on March 9.
Immediate Passenger Reactions and Social Media Backlash
Commuters quickly took to social media to express their discomfort with the overpowering scent. One Reddit user described the experience as "far too strong and makes me feel a bit nauseous rather than making me fancy a magnum," while another compared it to "a weird artificial chocolate smell like a chocolate-scented bubble bath" that was "not really appetising at all." Multiple passengers reported the scent permeating deep into the station, with one individual noting they could detect it "down by the Victoria line" and initially thought someone was wearing exceptionally strong perfume.
The intensity of the aroma prompted Transport for London workers stationed at the facility to formally complain to St Pancras management after the chocolate scent infiltrated their break room, creating an unpleasant working environment. On platform X, formerly Twitter, users questioned whether the advertisement was "making everyone else somewhat nauseous," with one observer noting the peculiar combination of "chocolate + disinfectant" odors reaching all the way to the tube platforms.
Official Responses and Campaign Adjustments
London St Pancras Highspeed, which operates the railway station, confirmed that JCDecaux, the company responsible for the Magnum installation, has implemented changes to the timing and frequency of scent release in response to the concerns raised. A spokesperson for Magnum Ice Cream Company maintained that the campaign has "received mostly positive feedback from commuters onsite" but acknowledged they would "continue to optimise the campaign based on consumer feedback" until its scheduled conclusion on March 22.
The company initially described the activation as designed to "recreate the multi-sensory pleasure of enjoying a Magnum through sight, sound and scent" and intended to "bring a moment of enjoyment for commuters." However, critics like commuter Bob Bounds countered that "the sickly smell pumped out is awful, and stays with you," characterizing the marketing approach as "marketing gone mad."
Transport Authority Involvement and Ongoing Monitoring
Transport for London confirmed awareness of the issue and stated they had escalated concerns to Network Rail, which holds responsibility for the area where the advertisement is positioned. The multi-sensory campaign represents a growing trend in experiential marketing, but this incident highlights the potential pitfalls when sensory elements impact public spaces frequented by thousands of daily commuters.
As the campaign continues through its scheduled run, both Magnum and station operators will be closely monitoring passenger reactions to ensure the adjusted scent dispersion parameters adequately address the comfort and wellbeing concerns raised by those navigating through one of London's busiest transport interchanges.



