 Ramba uchiverenga ndima iyi - Njodzi yakanyanya kuitika munyika yose yevanhu vasina kupfeka yakaitika muna 1984 kuBhopal, kuIndia. Kuputika kwemhute dzeindasitiri kubva mufekitari yeUnion Carbide, yaiva yeUnion Carbide, Inc., U.S.A. yakazotengwa neDow Chemical Company, kwakauraya vanhu vanenge 3.787 uye kwakakuvadza vanobva pa150 000 kusvika ku600 000. United Kingdom yakatambura chiitiko chayo chakashata zvikurusa chokushatiswa kwemhepo apo Great Smog yaDecember 4, 1952, yakaumbwa pamusoro peLondon. Mumazuva matanhatu vanopfuura 4.000 vakafa uye fungidziro dzazvino uno dzinoisa chiverengero chacho pedyo na 12.000. Kuputika kwetsaonamishonga yeanthrax yakabva murabhoritari yokurwisa utachiona muyaichimbova USSR muna 1979 pedyo neSverdlovsk inofungidzirwa kuva yakaparira rufu rwavanhu vanenge 64. Chiitiko chakaipisisa chokusvibisa mhepo chakaitika muUnited States chakaitika muDonora, Pennsylvania mukupera kwaOctober 1948, apo vanhu 20 vakafa uye vanopfuura 7.000 vakakuvadzwa. 