Fashions and fads come and go and nowhere does that seem truer than in the vaping world. Or is it? Nothing happens by accident; nothing happens just because everyone else is doing it – and few vapers are ‘sheep’ (otherwise, so many of us would still be smoking, let’s face it!). So, it is then with the increasing use among vapers of slim, small pod devices because their ever-deepening popularity can often be attributed to fluid that more often than not goes in them to be vaped – salt-based e-liquids or the more specialised nicotine salts.