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Sure:
I bought a "SilencedAir Silencer 150mm x 300mm" from a ganja spliff weed hydroponics shop and strapped it to the Miele extractor using a "METU Fast Clamp 150mm" airtight coupler.
I'm also going to line the inside of the cupboard that contains the extractor with "Pyrosorb-S Class 0 convoluted acoustic foam sheet" (I have this lying around already, pilfered from work).
The Miele DA 2578 extractor is already very quiet relative to its size and flow rates, but the above makes it totally unobtrusive.
I also fitted third-party activated charcoal carbon filters from German eBay, MUCH cheaper than the official Miele items.
I got a new-old-stock Miele DA 2578 off EBay for £150, it’s quiet-mark certified, really inoffensive.
We’re running it in recirculating mode with third party (much cheaper) active carbon filters from German eBay, and I fitted a 300mm tall silencer/attenuator that I bought from a hydroponic jazz cabbage shop. Very effective and quiet.