Kernrechtsfrage
Whether the insured's chronic bronchitis qualifies as an occupational disease caused by passive smoking at work.
Extrahierter Entscheid
The disease was not proven to be an occupational disease under Art. 9 UVG; neither the listed-stuff route nor the strongly predominant causation route was established.
Extrahierte Begründung
Passive smoking is not itself on the list of harmful substances, and the medical evidence did not establish a strong-overwhelming causal link. The bronchitic episode was diagnostically separable from the workplace smoke exposure, and further evidence would not change this.