Is flux welding bad for you?

Inquiring minds may wonder: Is flux welding indeed detrimental to one's health? This ancient technique, while widely used in metalworking, utilizes fluxes that can produce fumes and particles during the welding process. These emissions, it is feared, may contain harmful substances that could potentially irritate the respiratory system or even lead to more serious long-term health issues. Given the importance of worker safety, it begs the question: Should flux welding be avoided, or are there proper precautions that can be taken to mitigate its potential risks?