Oh no don't say this is a thing i always do this and never notice.

It was better with it not getting wet it was a feature.

It depends what mic your using some mics can faulty my last mic i used became faulty when it fell over once became loose connection only way i fixed is replacing it. Unfortunatly.
DayZ has a thing where loose connections can not funtion while ingame it needs to be fully plugged in and needs right port connection on the computer.
if you tried everything there's a gotta be fix there is a few videos on youtube That sometimes help. can look up the microphone you own and
watch tutorial on how to set up or another thing go to your steam settings and choose your mic input should show your microphone.
i hope it helped.

Pro tip: don't unplug/plug your mic while in game it dosen't work only do it when on your desktop and than rejoin. and go to your settings ingame and check for voip and see if your volume meeter is going up or down.

@Geez i tried to replicate the bug on video but it didn't Happen so it must of happened to me first try but never happened again unfortunatly.