From 1990, when three counties in California enacted the first local 100% smoke-free laws the percentage of the US population living in an area with a 100% smoke-free law has grown substantially
"Smoke Report May Change Public Habits." USA Today, January 7, 1993, p
For example, smoking increases the risk of: Ectopic pregnancy (this type of pregnancy kills the fetus and the mother can also die or become infertile as a result) Birth defects Diabetes Heart disease Stroke Rheumatoid arthritis Difficulty getting or maintaining an erection (erectile dysfunction or ED) Smoking also increases your chances of developing colorectal or liver cancer
$8 \times 9.5$ cm ($3.1 \times 3.7$ inches)
So, when you smoke these chemicals are entering the mouth and sticking around, particularly as smoking dries out the mouth
Impact of Plain Packaging in Canada About This Report This report presents findings on the impact of plain packaging in Canada based on data collected from adult smokers before (2018) and after (2020) the introduction of plain packaging