I worked in a machine shop and all the machinists were "smoking" those one day, our supervisor about sh!t himself when he saw all the machinists "smoking" one day. Then they got him started, he liked it most because they look just like cigarettes but he can be puffing away on it in the grocery store or the "yuppie mall" and nobody can do anything about it. The guys said you can even use them on airplanes and other non smoking places besides the machine shop.