I detected the scent of this shrub in the air long before I saw it, and it filled me with nostalgia for my garden back in Portsmouth, Virginia. It is one of the plants I left behind when I moved to Arizona. How does one describe a smell? To me the dominant aroma is spicy, like cloves, but sweet. It smells the way clove chewing gum tastes. 

Koreanspice viburnum (Viburnum carlesii), at Boerner Botanical Gardens, Milwaukee, Wisconsin.