not sure if anyone else has tried this, but i used it very successfully yesterday in a theatre. I used the same principle as a hooka or a ..... I in haled from my pv, and instead of blowing out a huge cloud or holding it in, i simply blew through my straw. The vapor then came out of the liquid in the cup and all the vapor stayed in the cup. worked out very nicely since i hate holding my breath. I also use this method at work with coffee. I feel awkward when co workers see smoke coming out of me. But it's just looks like hot coffee when i use this method. Try it if your not to comfortable vaping in public.
happy vaping yall
happy vaping yall