As a guy who worked "geeksquad" jobs at small computer repair shops for years, I can completely understand this. The substance that is exhaled by a smoker is o

As a guy who worked "geeksquad" jobs at small computer repair shops for years, I can completely understand this. The substance that is exhaled by a smoker is one of the queerest substances I've ever encountered. As the computer's fans pull it over the cooling surfaces on the cpu, gpu and psu, it accretes with alarming speed into a think, insulating, yellow sludge that then traps dust and further enhances its insulating properties. Back in the days of the MHz wars, pre-made consumer pc's like compaqs, or Packad-Bells needed all the cooling they could get. If the box was up on the table at head level with the smoker, it took only a few months for the cooling to become inadequate and the cpu to fail from overheating. Sometimes we could dunk them in alcohol overnight (the cpu/heatsink, not the whole box) and they'd work in the morning, often not. We had an official diagnosis CFFCS that we'd write on the form. "Cooling failure from cigarette smoke." Or, yelled from the back "just another case of see-double-ef-see-ess." Don't even get me started on the smell...