if you don't stop smoking this will happen to Our world:
Harmful impacts include pollution, soil degradation and deforestation, contributing to adverse climate change and biodiversity losses.
and here is a question from people
Tobacco use kills approximately five million people annually worldwide, accounting for over 20 percent of all deaths of adult men and 5 percent of deaths of adult women. As death rates from causes not attributed to tobacco are falling, the proportion of all adult deaths due to smoking will rise.
Smoking-related illness in the U.S. costs more than $600 billion a year, including over $241 billion in direct medical care for adults and $184 billion in lost productivity. Secondhand smoke is a serious health hazard for people of all ages, causing more than 41,000 deaths each year.
Tobacco industry releases huge amounts of carbon dioxide into the atmosphere every year which greatly contributes to global warming.