well usually when one designs something with quality they do put some thinking on what could accidentally go wrong. looks like IBM has a better design team than apple
Yeah. Sure. I spilled a cup of milk on my brand new Lenovo think pad about 4 years ago. It fried. Required logic board replacement.
BTW, IBM hasn't been that brand holder for 10 years. Lenovo bought the division from IBM in 2005 and moved what was left of the brand overseas in 2012. There is no such thing as a "IBM think pad", and the "IBM design team" no longer makes laptops. And I am here to tell you anecdotally that that video is pure bunk.
You want a "well built machine designed to accommodate physical attacks", than you should be buying a panasonic tough book (with all the ugliness that implies), not a svelte thinkpad. Thinkpad isn't built for or sold to the audience interested in that kind of design (the linked youtube "testing" not withstanding).
My MBA is a far more robust laptop than my Lenovo was, and the design team did a far superior job in overall construction and build quality. I have had both of them apart.
Back to the OP, remove the back and let it dry out. put a fan next to it to blow air across. There is probably some moisture trapped in the wrong place, and getting more airflow will hasten its evaporation.