Human exposure to aflatoxin is through ingestion of contaminated foods. Inhalation of the toxins may also occur occasionally due to the occupational exposure.
Symptoms of acute toxicity: vomiting, abdominal pain, pulmonary edema, convulsions, jaundice, coma, and death with cerebral edema and fatty involvement of the liver , kidneys , and heart. Long term intake of aflatoxin can be associated with hepatic cancer.
Adult humans usually have a high tolerance of aflatoxin, and, in the reported acute poisonings, it is usually the children who die
For humans, aflatoxin is predominantly perceived as an agent promoting liver cancers, although lung cancer is also a risk among workers handling contaminated grain
http://www.fehd.gov.hk/safefood/report/aflatoxin/text_report.html
http://www.ajcn.org/cgi/content/full/80/5/1106
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