Are you new to metalworking fluids?  Working with metalworking fluids has inherent dangers that are better understood today then they were 20 years ago.  They can cause irritation, nose bleeds, coughing and various other symptoms if you are stupid enough to drink them.  It is important to take basic precautions to ensure you are always working safely and effectively.  This article from Tom Mcloughlin is geared down for the newcomer, and talks about best practice sharing based on his on hands experience. Refer to article link for his Blog Post.