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 dog butt sniff is the canine equivalent of âhello, how do you do?â and similar to how humans use a handshake when meeting and being introduced to someone. Dogs communicate with each other using their strong sense of smell and detect signals in the chemicals in smelly oil from the anal glands. Dogs have prominent and active anal glands. 2  These apocrine glands, which sit on each side of a dog's rectum, produce strong-smelling secretions intended to send chemical signals about that dog's identity to other animals.