Lung cancer, smoke exposure, and sex
Words appear on screen reading: That's why we have a range of products that give adult smokers better alternatives to cigarettes
The issue with Euro-fuses (which is what I call them as they can have a ceramic or plastic form, this is completely non-critical!) is that the circular contact area to the fuseholder, can develop an oxide or contaminant layer (because you touched them during installation with your greasy, dirty paws, which inhibits current flow, just as well as if the fuse had blown open...fuse looks fine (because it IS!), just not making contact (which it ISN'T!)
Unlike cigarette testing machines, which were calibrated to smoke the putative reduced-risk cigarettes in a standardised way, smokers compensated for the lower delivery of nicotine by taking more and deeper puffs per cigarette, smoking more and occluding the tiny ventilation holes on the filters with their fingers