tobacco stuck in throat doesn't just affect your lungs — it can seriously damage your mouth and too. Smoking and chewing tobacco expose oral tissues to harmful cancer-causing chemicals, increasing the risk of serious Jury in tobacco case awards

The sieve is too large and lets usable tobacco through

Gastrointestinal diseases affect this system and the gastroin

Mucosal Immunol (2008) 1(Suppl 1):S313.10.1038/mi.2008.40 43 FussIJJoshiBYangZDegheidyHFichtner-FeiglSde SouzaHet alIL-13R2-bearing, type II NKT cells reactive to sulfatide self-antigen populate the mucosa of ulcerative colitis

Efficacy and safety of a fatty acid amide hydrolase inhibitor (PF-04457845) in the treatment of cannabis withdrawal and dependence in men: a double-blind, placebo-controlled, parallel group, phase 2a single-site randomised controlled trial

This isnt just exclusive to the US, this level of air quality is similar in most developed nations, and it's often far worse in low and middle income countries