The word "香喷喷" is formed by attaching the reduplicated component "喷喷" to the root character "香", which means fragrant. The reduplication of "喷" (originally implying a spraying or puffing action) functions as an intensifying suffix, creating a vivid auditory and sensory emphasis that conveys a strong, wafting fragrance. This construction results in an adjective that descriptively amplifies the sense of smell denoted by the root.