Is it bad to be around someone who recieves chemotherapy?

No: No problem for you. For them, you will want to avoid getting them sick while their immune system is down. Wash hands very well and cover your mouth when you cough.

No: The concern when someone is on chemotherapy is that their immune system is weak and hence the risk to get sick from minor agents increases. So be careful that you don't come around them if you are sick with a cold or the sorts, good hygiene is key as well. Most importantly, if they are sick from the medicine, they'll appreciate the company. Good health.