Smoke Screen

I was helping Sammy out at work today by cutting out a die plate for him on my CNC. The main part that needs cut is an 1/8" aluminum plate, and it is backed up by a piece of 5/8" die board (which is basically plywood with very thin layers of wood, about double the amount of typical plywood) The only minor complication with doing this is that I can't run the flood coolant while I'm cutting it or the die board gets soaked and ruined. I was using a can of aerosol cutting fluid instead. Only thing about doing it this way is that it makes a lot of smoke!!! I was cutting it in three passes, and after each one adding more cutting fluid. About halfway through it looked quite a bit like when you open up an industrial sized smoker barbecue in there!!! The owner came over with a very concerned look on his face. I said to him, "looks bad, doesn't it???" He asked what was happening and I explained to him. He was thinking that next time I should cut an extra board and cut it out before, then cut the aluminum with the flood coolant going, and throw that board away afterwards!!! He just doesn't get it, I don't think.