If Shepard chooses synthesis ending (green one) - what actually happens to Husks? Are they dead or they become sane?
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2They got impaled and then sucked dry by the tech. Pretty sure they're dead Jim. – Radhil Nov 28 '19 at 13:10
According to Mac Walters, the creative director for the Mass Effect franchise from Bioware, they are not sentient anymore. He mentioned that in a video, in collaboration with Ars Technica, where he responded to unsolved mysteries of the Mass Effect Universe.
Specifically, the question he answered, which is related to yours, was:
Do Reaper husks retain any of the personality of the converted individual, even if they have no control over their own actions?
And Mac's answer was:
The answer to that is no. Reaper Husks are husks. You must kill them, do not hesitate if you see one, destroy [them].
This can be seen in the following video (see 1:01):