Due to my allergies, I did some research and talked to a pretty knowledgeable cutting tool tech and learned how to cut without using coolants. I will use some light oils for drilling/milling stuff though. Cutting oils don't bother me nearly as bad as lathe coolant does. Grinding coolant is another one that kills me. We had this one surface grinder that you could put a small car on the table that put up a pretty good mist in the air and well, that thing would put me down after 2 days of using it.
I clearly haven't figured out how to do it... I've burned up some tooling trying.... But to be honest I can replace tooling, getting oil mist all over a car in final primer would be much more of a problem.... As I now have one car painted I just push the second car outside when I need to do something...