is smoking 8 cigarettes a day bad cool guide to the damage does to your body : r/coolguides The Many Dangers of Tobacco

"This is more lethal, more dangerous than any prescription drug, and it is more addicting." According to the Centers for Disease Control and Prevention, cigarette smoking is the leading cause of preventable disease and death in the United States, accounting for nearly half a million deaths every year

Do not discard your vape

A quality air purifier with both HEPA filtration (for particles) and an activated carbon layer (for VOCs) is effective at removing airborne smoke odors

The man needs answers, starting with the joint query

For lung cancer, some case-control studies found no dose-response gradient after tobacco adjustment (8), whereas others reported elevated risks with heavy cannabis use (84), and MR studies suggest a potential causal link, particularly with squamous histology (65,66)