I have never noticed a smell with mine. The only time I use a mask is when I clean the wraps...Also does the smell die down after a few uses or do I need to buy some masks haha
For example, I am about to print a load of white panel black mugs that require a heavy black. Once I have finished I will up the temperature to its highest level and stick the wraps in there for about 10 minutes to gas off all the excess ink that is left on the wrap. When you open the oven you see it all escape and that is the only time I wear a mask.
I do not put a piece of paper or anything else in between the wrap and the printed sheet even though you can see an imprint of the design. I am using either the 120gsm or the 115gsm papers from Ink Experts. For my set up they do not allow any bleed through from the wrap (hence no need to use any additional paper), even if you were to put paper in between it would not affect the time/temp enough to adjust anything.
If its a small run of around 144 then I will most likely do 18 at a time which are cooked between 21-24 minutes depending on the design. Once I finish the first 18 the second 18 go straight in and the timer starts again.