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 ...
Dense shade and full sun both hinder flowering. If your dogwood tree grows with either one of these conditions and does not flower, move the tree or correct the existing conditions. Thin taller trees to allow filtered sunlight, if too much shade is the problem.oth drought and poor drainage can cause dogwood trees not to bloom. Pacific and kousa dogwoods are more tolerant of drought conditions than flowering dogwoods. Provide 1 inch of water per week to young dogwood trees up to six years old. Dogwood tree roots are shallow.