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#volcanic gas #volcano emission #natural source #toxic gas #VOG #volcanic pollution #sulphur dioxide

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#smog #haze #air quality warning #breathing hazard #face mask #health impact #volcanic pollution

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#smog #gas emission #sulfur dioxide #sunlight reaction #photochemical smog #volcanic pollution

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#sulfur dioxide #hydrogen sulfide #volcanic pollution #noxious gas #fumarole gas #sick from volcano #hot gas