I opened my PC to clean it and found some green liquid present on 3 of my case fans (All three exhaust). It's not on anything else and I've included an image below. Could anyone have any guesses what it could be from? I don't have a liquid cooler and have never spilled anything into the PC.
View: https://imgur.com/a/v1msLZ6
View: https://imgur.com/a/v1msLZ6