Asthma is a chronic disease that causes the airways of the lungs to swell and narrow.  If you are a machine operator machining or grinding metals with metalworking media, BEWARE! - You are in high risk category.  “Work Related Asthama” can be caused by exposure to regular substances found in the workplace, like metalworking fluids, metal dust, and fumes.

Prevention is always better than a cure.  There are many technological advances available today to help, provided both employees and employers behave more responsible by using right fluids and right equipments.  IAPA (Industrial Accident Prevention Association) explains WRA with causes and prevention in details.  Please  refer to the article link.