In Canada, most packs sold have 25 cigarettes, but packs of 20 are also popular
This applies to vaping generally, not to one device type over another the health consideration is about nicotine intake itself, not the hardware delivering it
While grilling briquettes can be used in a pinch, activated charcoal is processed for better porosity and absorption power (and isnt treated with flammable chemicals)
As Armin mentions above, the ongoing reticience of our profession to engage in a dialogue over the aesthetics of these packages limits our ability to both change the appearance of these artifacts or empower the role of our profession in their creation
But a well-designed purifier can capture virtually all airborne allergens, bacteria, viruses, and smoke, and do it quietly and efficiently, around the clock, for years on end