Using ASA not ABS but dealing with fumes with a large capacity recirculating activated carbon filter inside the enclosure. No smell with it closed & running.
Do a search for Nevermore Stealthmax or Bento Box. Someone recently remixed the Bento into a Magnum or XL for the RatRig. Not exactly what you could consider quiet.
That would be me. I simply don't worry about it and it is way overblown. Walk into any extruder and or injection molder and see the level of stench there and OSHA does not mandate PPE for the press operators. The amount coming off of the small print head is minimal.
I run almost 100% abs nowadays and its all just in the enclosure doing its thing. of course, that's not a room anyone going in for any other purpose nor is it heated or cooled, so its not going in the HVAC.. but still..