Dude, let's be honest here. Cigs kill selectively, and after a long exposure. It's a statistical thing, and that's why it's a gamble that many people take. But there are many compounds that will always do damage, and very quickly. So I wouldn't argue the old "cigarettes are worse" when faced with something dangerous. I am drip-vaping a 30 mg/ml 60% PG 40% VG unflavored mix right now, and while there's a bit of throat irritation (I guess they call it TH), the only taste I detect is the (dubious but faint) flavor of heated chinese metal and wick workmanship. Now, I have no certainty my supplier sent me the spec'ed 100 mg/ml PG solution, so it could be weaker, but I rather think not. If your nicotine solution has a distinct irritating quality, or taste, I would send it back, it's just not worth it. It's bad enough that we have no idea about the typical flavorings, and cases like the butter flavorings are proof of how the unexpected can kill, so if you are starting with a base that has a chemical taste, you are way out on a limb you don't need to be on. That's my view.