Till date, the only solution to a friend who insisted he smoke in your house or office was to open a window or turn on the exhaust full blast and only hope that those evil free radicals that caused cancers of all different kinds did not come your way. Of course you could do it my style, by simply throwing the person out but I understand that does not augment well in business relationships.

Technology does serve to bring you with the answer in this case too. Neo-Tecs Ionic Smokeless Ashtray claims to be the worlds first ashtray that actually purifies cigarette smoke as it leaves the cigarette. When the eco-friendly device, made from ABS plastic, is switched on, it breaks down smoke and other particles into negatively charged ions using an ionizer. These particles are then captured in the positively charged dome.

It not only rids your environment of cigarette odors, but also of airborne dust, bacteria and many other harmful pollutants. It is 100% silent and runs on either 4 AA batteries or an AC adapter (included). It costs just 20$.

Of course you still need to keep your distance from the smoke that the dude is throwing out but at least its something.

Source