With the MTL style of vaping, the vapour is first inhaled into the mouth before being taken into the lungs, just like the smoke is when you smoke a tobacco cigarette
Moradi M, Vasseghian Y, Arabzade H, Khaneghah AM (2021) Various wastewaters treatment by sono-electrocoagulation process: a comprehensive review of operational parameters and future outlook
Smoking at least twice as harmful as stated on packages: health institute Smokers inhale much higher doses of harmful substances than is stated on their cigarette packages, according to a study by Dutch public health institute RIVM
There seems to be one emerging scientific consensus, which is that most of that plastic is not floating on the ocean surface.-Roland Geyer
Most people coming off 20 a day start on 20mg nic salts in a pod kit, then step down over time
If you can't remember the last time you changed them or had them replaced, do yourself a favor and go for it