Why do you pronounce the L in salmonella and not in salmon?

The pronunciation of the "L" in "salmonella" but not in "salmon" is due to their different linguistic origins and rules of English pronunciation. "Salmon" comes from Old French and retains a silent "L" in line with its phonetic evolution, whereas "salmonella" derives from Latin and has a pronounced "L" according to its etymology. This reflects how English borrows and adapts Words, resulting in variations in pronunciation.