I just started flying for this company based out of Chicago (I fly out of Gary). I tried to look up my company’s pilot non-disclosure and general operating manuals to ensure I don’t break any non-disclosure rules. Reading through the NDA was lengthy but a few of us came to conclusion that I’m not breaking any rules and I’ll retain anonymity anyways. Here is the MADS compression module - acronym is MNATS for whatever reason. (That’s what it’s referred to in my company’s aircraft minimum equipment list.) Basically it stores the compressed concentrated chemical fluid before mixing with extra water vapor which comes from the PACKs after coming from the water separator. (The water that’s extracted from the atmosphere used to cool engine bleed air into the cabin for comfort). Quick rundown on how that works... super hot compressed air is bled from the engine, cooled using cold atmosphere air and some water and a cooling turbine, then sent to the cabin. Our MADS (I think medium altitude dispersement system?) uses excess water which is now warm from having cooled that air, and mixes it with whatever the hell is in that compression module which is super concentrated, and sprays it into the right exhaust stack. Apparently the new technology is these super small chambers, saving on weight and such. It’s crazy to see the suits our maintenance guys have to wear to refill these things! They tried telling me they were removing and replacing old turbine oil. Yeah right!