Well here is a really bizarre question. I just opened a package from KEH - a used 50D body that I bought for a backup camera. Looks to be in excellent condition, except that it smells of cigarette smoke. The previous owner must have been a chain smoker (yuck). Is there any (camera safe) solution I can rub on the camera to remove the odor? Or if I just leave it out in the air for a while do you think it will go away?