Is it ok to have radiation for breast cancer with an upper respiratory infection ?covid negative . is it ok to use vicks vaporub?

Yes, you can use Vicks vapor rub when you have upper respiratory infection and breast cancer. Although there is no absolute contraindication, I think it's better to delay the rad therapy until you are fully recovered. If you have any doubt, you should talk to your radiation oncologist. Good luck and wish you have a full recovery.

Your Radiation oncologist can address the question about the use of Radiotherapy while you have upper respiratory infection. In my view you can provided it is not causing you any fever and your chest X-ray does not show any evidence of serious infection such as Pneumonia. Vicks Vaporub use is fine.