The word Efluvial is misspelled against Effluvial, an adjective meaning "Belonging to effluvia."
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Effluvial has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings E & luvial which should not be misspelled with single 'F'
Wrong Spelling:  E-f-luvial 
Correct Spelling:  E-ff-luvial 
Check more misspelled words of Effluvial to spell it correct.