(note, the sort of images one might associate with human-caused smoke clouds are usually more evident on visible than infra-red imagery so as it is now dark in that region, further evidence may not be available until around 0400h UT which is early daylight in that time zone) ...
I find good coverage of Ukraine on the “Europe” infra-red and visible images available on the Irish weather service website which is at met.ie, satellite imagery available here:
https://www.met.ie/latest-reports/satellites/europe-infrared
I’ll bookmark that - thanks!