If you get an old office computer that was used around 1980, you’ll probably find it yellowed or even browned with nicotine stains. Dust wasn’t the only thing in the air in an office back then.
In the 80’s I worked at a company that sold CAD workstations. We had one customer that smoked in his small office. Whenever we went there for maintenance, I would bring some cleaning wipes and transform his medium brown computer to something closer to light gray. Yuck!
