Re: Tobacco smoke
Bought a computer from my neighbor on disability. He basically sat and smoked in front of it all day. I pulled all the keys off the keyboard and soaked them in dish soap for hours. When I came back the water was piss yellow. I dumped it on the lawn and then soaked them again (this time being quite generous with the dish soap). I took the monitor outside and sprayed it with Windex which, at the time, was slightly blue. What come running off was (again) piss yellow. The tower I just used an abrasive cleaner on. It's the only thing that came out looking remotely white.
On the plus side, he'd bought Visual Basic 3 for a project. I'm still writing vbscript at work today.