cigarette card collecting cards are small collectible cards that were inside of packets from 1880's-1940's. Originally used to stiffen to protect the cigarettes they became used for brand loyalty ("collect the entire Powerhouse Collection - Cigarette card
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If the number reaches 115, the air has reached an unhealthy level

The net effect of this oppositional change in carcinogen exposure is unknown, but based on historical trends in exposure and lung cancer risk in US smokers, one must consider the possibility that differences in toxicant exposure contribute to country differences in lung cancer risk

Lancet 377, 552 (2011)

Theres one thing you can change to stop aging your brain and putting yourself at increased risk of dementia, and thats to quit smoking. Reference: Investigating the Relationship Between Smoking Behavior and Global Brain Volume by Yoonhoo Chang, Vera Thornton, Ariya Chaloemtoem, Andrey P
Would workers fare better in small businesses

Cigarettes deliver nicotine along with thousands of harmful chemicals
