I was thinking, how do they extract the nicotine used in e-liquids? Like for tobacco or cigar flavors? Do they use real cigars and tobaccos like extracting from a chemical contaminated source or what? I was reading in the DIY forums about tobacco extraction and was thinking, "Gee if you extract essence from a clove cigarette or cigar for instance, isn't it going to leech out the chemicals too? Hubby is worried some vendors might use methods like that extracting from chemically tainted sources, what are your thoughts? Keep in mind we're both new to this so if it's a stupid question I apologize.