VOG

Vog is a form of air pollution that results when sulfur dioxide and other gases and particles emitted by an erupting volcano react with oxygen and moisture in the presence of sunlight. The word is a portmanteau of the words "volcanic" and "smog"

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LAKI
KILAUEA
HONOLULU
	1784

Laki or Lakagígar (Craters of Laki) is  situated in the south of Iceland.
Last eruption

	1784

The system erupted over an 8 month period during 1783-1784 from the Laki fissure and the adjoining Grímsvötn volcano, pouring out an estimated 14 km³ (3.4 cu mi) of basalt lava and clouds of poisonous hydrofluoric acid/sulfur-dioxide compounds that killed over 50% of Iceland's livestock population, leading to famine which killed approximately 25% of the population.
The Laki eruption has been estimated to have killed over two million people  globally, making it the deadliest volcanic eruption in the history of mankind. The drop in temperatures, due to the sulfuric dioxide gases spewed into the northern hemisphere, caused crop failures in Europe, droughts in India, and Japan experienced its worst famine.