Especially Acrylic !
Yup, 50 yards in light drifting air isn't unusual. Less if there is no wind, possibly more if the wind is strong.
but did you read my last post above?
It appears a good majority of users on all the forums I have read use a quiet inline extractor,
How many of them are using the machine for business purposes?
How many of them are using the lasers in a built up area?
How many of them are using them in a small block of flats?
Acrylic fumes for example are heavier than air by a fractional amount, the soffets of houses and flats are designed to let in circulation air,if that smell gets into there it will settle into any buildings under them.
Dave, Phil and I know of a young lady last year who decided against advice to operate a Business from her Flat using a laser.
It didn't end well