Ihe omume mmetọ ikuku
Ihe omume mmetọ ikuku bụ ngwakọta pụrụ iche nké ikuku na ihu igwe nké na-ebute oke mmetọ ifufe n'ébé bụrụ ibu.  Ihe atụ nkè mmetọ ikuku gụnyere:

 Ihe méré na Ndagwurugwu Meuse n'afọ 1930
 Ihe méré na Saint Louis n'afọ 1939
 Ihe omume Donora nke afọ 1948
 1952 Ihe méré na London
 1997 Ọkụ ọhịa Indonesian Ihe omume
 2005 Malaysian Haze Episode [citation needed]
 2006 Ihe Omume Haze nke Ndịda Ọwụwa Anyanwụ Eshia
 1984 Ọdachi Gas na Bhopal

Hụkwa 
Smog, Haze, Ozone, PM2.5, Mmetọ ikuku, Inversion

Edensibia