You need to know the specific chemicals, exposure levels and routes ( inhalation, skin ), how they are processed in the body ( which organs, body chemistry affected) before a doctor in industrial medicine and your oncologist could start to help you.
There likely is not much hard data out there for the interaction between them n the body.
If skin absoption is not an exposure route, you might be able to wear a half face cartridge respirator with appropriate cartridges for the specific classes of chemicals to minimize inhalation hazards.
Best of luck with your treatment.
Frank