Shimon – does the torah say to look into the bri’ah and see what harms it and adjust our lives accordingly? Have any Jews ever done that?
At the most, even if there is an issue, it would be no better than rav moshe’s “shomer pasaim Hashem” heter regarding smoking.
No, I don’t think anyone should smoke….that’s not the point. learn the teshuvah, it’s seminal in the area of the halacha being discussed.