Which explains why it doesn't smell like cigarette smoke, beyond the ... [he waves a hand, gesture encompassing the whole of the place. beyond the fact that it's only really half Leblanc]

I never smoked around my computers, at home. [because his computers were important to him, and nothing ruins the cooling on a desktop than nicotine dust. never mind the fact that his landlord probably would have had a fit, if he'd smoked in his apartment]