Are you still smoking?
CrazyRussianHacker on YouTube.com made a experiment to see how fast a paper filter got stained.
Source: CrazyRussianHacker at YouTube.com
I totally agree with him, smoking is disgusting. I can not understand how anyone can smoke. It must be the dumbest “joy” anyone can have. You stink from it, you pollute the air for everyone, you get sick from it, you make others sick from it, and you even pay for it all. How dumb is that?