(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.
If the fruit smells like vinegar or alcohol, or is so soft that it's almost melting, it's too ripe. You might be able to add rum and mash a too-soft papaya into a sauce for ice cream, but it's over-ripe for eating. A papaya has a distinct smell like a multivitamin or a medicinal smell. The riper it is it smells a little fruity but of course with the multivitamin smell. You can not detect if it is spoiled unless you get a rotting smell. A spoilt papaya would be blackish on the skin in the areas of rot.