Maybe write a few letters. You wouldn't believe what a difference it would make. But this is your chance. Don't blow it. After a certain point, there is no going back for makeup credits.
Chemotherapy often makes for incredibly sensitive olfactory senses.
Perfumes can be overwhelming and nauseating. I can't even sit next to my daughter when she eats a COLD sandwich. And by the same token, be especially sensitive if you are a smoker. If you do have to smoke, please go outside. And hang out outside for an extra 5 or 10 minutes to air out.