i also smoke, but i take care of my machines. i clean them out and clean the cases almost monthly. you would only find dust in them when it comes time to clean inside the case.

all of my Mac's are spotless. allot of smokers don't care to keep their machines clean and looking nice and in good maintenance. i do, its like i have OCD with them they have to be clean and looking good, i know what can happen to a computer if you just let it go (very nasty, and can fry the puter).

if they are not clean, i am not happy.