When was the last time you visited a museum? Did you notice the no smoking signs? Are they still observed? Even if you are influential and puffing the popular alec bradley cigars, still smoking is a no-no inside museum premises.
Historical items and artifacts are painstakingly preserved by experts. The items are too old and could be sensitive to heat thus they are preserved in areas with cool temperature. Artifacts are not restored but preserved to appear the way they are found by excavators.
It’s not everyday that we see a hundred-year old artifacts, so please observe the no-smoking signs whenever you are visiting a museum.