I am a huge worrier with my electronics, I will get that out in the open right now. I was wondering about the effects of different kind of smoke on my electronics, particularly with the LCD screen. I have a 20 inch iMac, and will be returning to school with a 37 inch LCD HDTV, and I wanted to know if smoke had a very negative effect on these screens. While my college activites are largely tame, my roomate smokes cigarettes, burns incense, and participates in...other activites that fill my room with smoke. Does this harm my screens that I love so much? He is also a big tech guy, and tells me not to worry about it. I'm not so sure though. Thanks for your input.