Reader question: What should be done first in the event of a CO warning or suspicious symptoms in a Vienna flat?
In the event of a CO alarm or suspicion of carbon monoxide in your Vienna flat: Leave the danger area for the open air as quickly as possible with the people present, without putting yourself at additional risk. From outside, call the fire brigade 122 and, if poisoning is possible, emergency medical services 144; explicitly state the CO suspicion. [COGesund][COHelfer] Do not wait for the property management or attempt your own fault-finding.
No smell does not mean all clear
Carbon monoxide is odourless and can become life-threatening quickly. Headache, dizziness, nausea or breathing difficulties can be warning signs; a simultaneous occurrence in several people is particularly serious. [COGesund] Normal olfactory perception or having switched off your own boiler does not reliably rule out a hazardous situation. The source can also be outside your own flat. [COHelfer]
Self-protection remains part of any assistance
Do not attempt a rescue that would expose you to a hazardous atmosphere. The health portal emphasises immediate alerting of fire and emergency services when personal risk is too great. [COGesund] Do not go back inside to take a measurement, a photograph or to switch off equipment. Inform the control centre if there may still be people in the endangered area, and follow their instructions.
From a safe location, the exact address, access details, the CO suspicion and any known information about affected persons are sufficient to start with. Unknown information should be stated as unknown. No one must re-enter the flat to provide a more complete report.
Have symptoms medically assessed
Even minor symptoms require treatment according to the information from the health portal, because later damage is possible. [COGesund] Feeling better outside therefore does not replace a medical assessment. Provide known duration of exposure and observed symptoms, without attempting to infer a safe measurement yourself.
Treat return as a separate clearance step
Clarify with the emergency personnel when and under what conditions re-entry is possible. A silent device or a ventilated flat is not by itself to be taken as confirmation of safety. The technical cause and subsequent recommissioning are part of the competent specialist inspection.
Only after the acute assistance has been provided will further residential organisation be coordinated with the building contact and specialist firms. Keep any actual incident notes and later inspection reports. A hypothetical case can be decided briefly here: the person does not fetch the tenancy agreement when an alarm sounds, but goes out into the open, alerts the emergency services and waits for professional instructions. Documentation follows the protection of people.