Designed with SolidWorks for makers.
The smoke is extracted as close as possible and transported via a radial fan to the fan in the guarding.
I have used a piece of an old vacuum cleaner hose with a 33mm inner diam.
The radial fan is a cheap model general available
Be aware that the lowest part is 5mm below the laser.
So fixtures most be lower or avoided.
Also lowering the laser with multiple passes can be a problem
When not in use the radial fan can be taken away.
It is a big improvement, much less odor nuisance in the room