Works flawlessly with moderate to heavy use for 25-30 days, just wish filter was replaceable
First off I have used anything from dryer sheets rubber banded to the thing toilet paper comes on all the way to going through the trouble of getting a 80 dollar fan coupled with a 100 dollar carbon air filter to try and reduce smoke smell.  This thing is basically as good as a big carbon air filter just fits in your hand instead of taking up a whole corner of your room.  These smoke buddies last about 25-30 days of daily moderate-heavy use.  I wrap my lips around it to get a better seal instead of trying to use it like a brass instrument mouthpiece (lips inside the opening).  This keeps the air flow more constant.  You can get as big a hit as you can hold and blow through this and you will not see one bit of smoke come out the other side once it goes through the filter.  Like i said it fits in an average sized hand well and fits almost any sized lips i can imagine of well.  The only down side is they should be more environmentally friendly and screw or pop apart to let you replace the carbon filter with an easy-to-change cartridge instead of making you buy a while new smoke buddy.  This would obviously cut down on price and landfill waste, but I'll continue to buy these because they work so well.  Only smoke you produce is from whatever you are smoking from.
Rating: 4 stars