can smoking cigarettes give you heartburn and GERD: Effects, link, and more Can Smoking Cause Chest Pain?
Description
The drug, which fights cravings, was available a few years ago on the NHS under the brand name Champix but was withdrawn due to some impurities

there is no agreement among the authorities regarding what the cause [of lung cancer] is there is no proof that cigarette smoking is one of the causes.

may want to consider bringing the higher nicotine-strength vapes that they are used to because EU countries limit nicotine to 20mg/mL
Genome Res

- They are caused by mucus or obstruction and often clear with a cough