Diabetes affects our blood vessels and nerves and therefore can affect any part of the body. However, certain parts of our body are affected more than other parts.
I don't think dogwoods have (much?) scent, maybe just lightly floral. The white petally looking things are not actually petals they are bracts, like a poinsettia has. There's something called an English dogwood that is very fragrant, but it isn't a true dogwood and is also known as mock orange. Bradford pears have a smell that this author described as sweaty socks, so if your tree doesn't smell very good that's probably it: http://www.gardenguides.com/106133-dogw ...
The gray dogwood (Cornus racemosa) is a bush that has simple, elliptical, and opposite leaves. Its gray-to-white fruits and gray twigs give it its name. This dogwood grows in thickets in damp meadows in the mountains of the northwestern corner of North Carolina.he bark, flowers, berries, and roots of the flowering dogwood also had many medicinal purposes. The bark and sometimes the roots were used as a substitute for Peruvian bark in treating intermittent fevers and malaria.