Not really worried about asphyxiation, honestly. Our house is not the airtight wonder of the northern regions...I was just mentioning that air WAS circulating, so it wasn't just a sealed-in, stagnant mess. That's all.
As far as grease in my computer...?
The whole side of my computer is open anyhow. I don't bother putting the panels back on the case as I tinker to maintain the damn thing.
I don't sweat the small stuff. Dinner takes a high priority.
Panz