As I've posted before, about 10 years ago I was building an addition to our house that essentially doubled the size of the master bedroom, added a media room and built it with an office to be included in the attic of the addition.
It was during this time that I happened to catch an episode of The Mancave show on one of the diy channels. This particular episode showed them building an airtight room in the basement of a swanky Chicago home.
The light went off and I was employing my google fu skills to gather the resources/equipment necessary for making my office a dual purpose space.
The best deal I could find at the time was to build in an exhaust fan vs one of the multiple of thousands of $$ for an air scrubber.
All in, my system, a central inline 440cfm fan with 3 air/exhaust ducts in the ceiling, came in right around $500 installed.
When I built the space I was primarily a cigar smoker, only smoking my 1 pipe 3 or 4 times a year. So, this meant that I would really only smoke in my office about once a week or so. Now that I've contracted both PAD & TAD, I find that I'm up in the cave 5 or 6 nights a week.
The fan, frequent emptying of my ash trays and trash cans, along with a weekly spritz of fabreeze, keep the place smellin fine and the Blonde happy.
In closing I thought I'd pass on a recommendation on inline fans.
When I got mine, the largest capacity affordable unit was a Panasonic 440cfm Whisper quiet fan. Now there's a company out there, Hyper Fan, that has a 1065cfm unit for just over $200.
https://www.amazon.com/Hyper-Fan-Digital-Mixed-Flow/dp/B00IGFE5BG/ref=pd_lpo_sbs_86_t_0/147-2920348-9036034?_encoding=UTF8&psc=1&refRID=ZDAVJB4XMMKWECSM2Y36
It has piqued my interests and I will most likely upgrade to this unit next year.