Oh yes, the scientists of the unspecified date in the past when everything was perfect and there were no politics and no one was ever subverting science to tell

Oh yes, the scientists of the unspecified date in the past when everything was perfect and there were no politics and no one was ever subverting science to tell us to smoke cigarettes. You are living in a fantasy. Science and economics have always been messy, and despite that advances in medical science are now and always have been the best and only real line of defense against disease.