Works well
I bought this for my spouse and I'm so glad that I did.  Smoke goes in, none goes out.  And almost no smell.  I have a very sensitive nose and I have to get right up to the output end of the device to smell *anything*.  Very impressed.  Only had it a month so don't know about longevity yet.  Every day I enjoy the lack of smoke in the house.
Rating: 5 stars