Misting is definitely related to temperature in my saw. If I'm cutting a big rock or particularly hard one, I get more mist (with horse laxative type mineral oil). I also note that it is increased with the depth of the oil (too much oil depth on the blade carries more oil up against the rock and is aerosolized. I agree that No Smoke (or the Napa equivalent product) does reduce the mist, but I don't use it very often, as I really don't have a mist problem. My lid has a countersunk edge to reduce mist escaping when the lid is closed and a few seconds delay before opening the lid results in most mist settled out to my satisfaction. I suspect most who have mist problems could reduce that mist by using less oil (obviously paying attention to keeping adequate oil on the work surface.
I did recently switch my work lights that are near my saw to led bulbs to reduce heat because the bulbs do accumulate a bit of an oil haze and I worried about fire hazard with hotter incandescent bulbs or even the florescent replacements. LEDs are wonderful light and cooler.
