(If you also have a sore mouth, sore gums, or a sore throat, talk to your doctor, nurse, or registered dietitian. They can suggest ways to help you without hurting the sore areas.) Choose and prepare foods that look and smell good to you.
1 Ravensara (R.aromatica) smells of a Cinnamon-Eucalyptus, and is also considered not as Therapeutic, but is used a lot for its Fragrance.  Ravintsara (Cinnamomum camphora) smells more of a Champhor-Eucalyptus, and is used when it is needed for Therapeutic purposes like respiratory help or shingles.
But fennel foliage is thready, whereas hemlock leaves are triangle shaped and lacy. And fennel has yellow flowers while hemlock has white flowers. If you bruise a hemlock leaf or sniff a flower it smells kinda nasty, whereas all parts of the fennel taste and smell deliciously like anise/licorice. Fennel (courtesy of Wikimedia) Really, all in all, itâs easy to tell them apart.