Around 20 people were evacuated from a building on Store Kongensgade in central Copenhagen on Thursday afternoon after suddenly developing symptoms including coughing and eye irritation, with the cause still unknown.
The evacuation happened in the heart of Copenhagen, on one of the busiest streets near embassies, offices and tourist spots. Emergency services deployed about ten vehicles including hazmat specialists. Yet despite the full scale response, authorities have not identified any dangerous substance. People were simply getting sick inside the building and nobody knows why.
As reported by Copenhagen Police, several occupants experienced itchy eyes and coughing with no clear trigger. They were treated on site and the building was cleared. No serious injuries have been confirmed so far. But the lack of explanation is unsettling for anyone who lives or works in central Copenhagen, especially in older mixed use properties where offices, apartments and shops share the same aging infrastructure.
A Week of Fires and Evacuations
This incident comes during a particularly tense week for Copenhagen emergency services. Just hours earlier on the same Thursday, a major roof fire broke out on Frederikssundsvej requiring a large response and leading to two suspects being produced in court. The night before, a fire at a Copenhagen student dormitory filled the building with heavy smoke and triggered another full evacuation.
For expats, the cluster of emergencies is a reminder that Copenhagen’s reputation as a safe, well run city does not mean the infrastructure is immune to sudden failures. Older buildings in dense neighborhoods can hide problems until something goes wrong. And when it does, the people inside may not get clear answers quickly.
The Expat Information Gap
One major issue in cases like this is communication. Emergency instructions are given in Danish. Police updates and municipal reports are in Danish. If you were in that building on Store Kongensgade and you do not speak the language fluently, you might still be unclear about what happened, whether it is safe to return, or what follow up you need.
I have lived here long enough to know that Danish authorities are generally competent and cautious. The rapid deployment shows the system works in the moment. But the followthrough for non Danish speakers is often weak. There is no proactive outreach to explain the investigation, no multilingual briefings, no clear guidance on how tenants or workers should document exposure or pursue health checks.
If you were evacuated or near the scene, you should contact your general practitioner and report the incident. Your GP is your gateway to specialist referrals if respiratory or other symptoms persist. You can also request documentation from Copenhagen Police or Hovedstadens Beredskab, the fire and rescue service. That paperwork may be important later if health issues emerge or if your employer or landlord needs to be held accountable.
What Tenants and Workers Should Do
You have the right to ask your landlord or building manager for information about ventilation systems, recent construction work, and chemical use such as cleaning agents or pest control. If the building has mixed commercial and residential use, ask whether inspections are up to date. In serious cases, you can escalate concerns to the municipal building department.
If you fell ill at work, Danish workplace environment rules apply. Contact your union or the Danish Working Environment Authority if you suspect work related exposure. Many expats do not realize these protections exist or that they can push for answers even without perfect Danish.
An Invisible Risk in a Visible City
Copenhagen scores high on international safety rankings. But unexplained mass illness in a central building clashes sharply with that image. The Store Kongensgade case is different from a fire you can see and fight. It involves an invisible hazard that made roughly 20 people sick with no immediate technical explanation. That is harder to communicate and harder to trust has been resolved.
The incident also fits into a broader pattern. After the devastating fire at the historic Børsen building in April 2024, politicians and officials emphasized Denmark’s strict building standards. Yet the recent wave of fires and evacuations suggests the system is under strain, especially in older central Copenhagen neighborhoods where renovation and inspection regimes may not keep pace with density and demand.
For expats choosing where to live or work, this week is a reality check. The glossy expat guides rarely mention aging ventilation, unclear landlord accountability, or what happens when an emergency unfolds in Danish only. But these are the details that matter when twenty people suddenly need fresh air and nobody can tell them why.
The authorities have not confirmed any criminal aspect and have ruled out nothing. Until the investigation concludes, residents and workers in that building and others like it are left with uncertainty. That is not unique to Copenhagen or Denmark. But in a city that markets itself on transparency and quality of life, the silence after an evacuation feels particularly jarring.
