Living in Mexico City is equal to smoking 40 cigarettes a day. So obviously, there are various paths to death, cancer and agony.
Let's take a look at a few comparative numbers to see alternative pathways to death. The occupations in the chart below equate to smoking the indicated amount of cigarettes:
As you see, these risk factors apply exclusively to poor people. Wealthy citizens don't have to bother about things such as bad ventilation in a coal mine, so all that's left for them is scream "cancer" at every cigarette they smell. But why worry? Because, as you see above, there is hardly anything healthier than a safe office job with the occasional cigarette in between. Certainly better than working in a Chinese coal mine.
If the air quality in Mexico City is as bad as they say, can you alleviate it by smoking cigarettes? Can cigarettes be healthy depending on the general air quality in your environment? You should definitely give it a try and begin smoking if you live in Mexico City or Moscow!