Curiosity, envy, and the desire to really quit merge into a successful quitting story when it comes to new vapers.
It usually starts with one smoker, usually a PAD to 2 PAD, who gets a set-up. They use it. It works. It blows their mind. They bring it to work, sing its praises. All the other smokers are immediately interested. (There will always be crusty, salt-of-the-earth, luddite-minded die-hard smokers who refuse to even consider the idea of something "high-falootin'" like an e-cig. In those cases, leave 'em be, they've obviously chosen death and will resent any of your efforts.) Then a second smoker gets their set-up, usually under the mentoring wing of the first user. It also works for them.
Next thing you know, everybody's getting starter kits, everybody's ordering new juices and sampling different flavors, everyone is sharpening everyone else "like iron sharpens iron". I've seen the whole gamut, the entire run of smokers. From grizzled, leather-faced, smoke-stained old timers dead set in their ways, to young people, barely eighteen, digging it like the newest fad.
90% of our business is based on referrals and word-of-mouth. We did advertising in the newspaper and such, but the returns we got on that weren't worth the price we paid. However, the amounts of time people have come in and said, "Someone told me about you guys," or "My buddy has one of these things," or "I saw a bunch of people using these things and they said come here" are innumerable.
We have customers who are clerks at smoke shops and gas stations, and whenever someone attempts to buy a Blu or complains about their Blu, they tell them to come to us. I've heard that story numerous occasions.
It's blowing up. And OP, never feel awkward. You're in the new cool crowd. Everyone else is on the outside looking in.
Like anything new, the more you do it, the more comfortable it becomes. Next time, force yourself to stand there. If you keep leaving the area the smokers are, the less chance you have of ever feeling comfortable in that situation. 
