Thank you Kyran! Its already unplugged, and the peq box still makes the audio signal.
I did this last night while prepping for a game, in my house (temp approx 19 degrees celsius and dry).
It was plugged in normally, but I note that the tiny alignment ridges on the white block that plugs into the sensor unit seem crooked.... However all the tiny pins seem straight and are making proper contact, as far as I can tell. There should be no damage, as I have only used it once in the field, and a handfull of times in the basement trying it out.
I should also specify that it still makes the default audio sound, but won't play the custom sounds I loaded onto the micro sd card (finally). I used sounds I found right in the forum, as I am not that technically inclined to find and properly format my own sounds. I used 4 firearm sounds other users uploaded, but can't get them to work. the incident with the smoke happened both with and without the micro sd card onboard, so that seems to be an unrelated issue.