Different computing eras smelled differently. The old, huge machines had a slight burning-metal smell. Early PCs gave off different odors of plastic, metal, and enamel. And who could forget the wafting scent of a monitor with smoke pouring out the back? The goat-like aroma of dozens of people in a computer center, up against a deadline? The odd smell of laser toner or massive piles of pulpy striped paper? Occasionally I’ll see a picture of a pile of old machines from the 1980s, and the olfactory memory will jump me.