pentachlorophenol(One of the universally toxic phenolic compounds, is a general purpose agent that is used as a fungicide, herbicide and molluscicide, particularly in Egypt where it is used to control snails that carry the larval human blood flukes that cause schistosomiasis. It is also used in wood preservatives and is very poisonous)
risk perception(A subjective appreciation by individuals which will more often than not bear little relation to the statistical probability of damage or injury)