Screen keeps flashing red

Hello,
(to clarify I'm using an ASUS gaming notebook pc G series) last night myself and a couple friends decided to sit out on the deck and watch some tv shows on my deck. It was a little cold but I didn't think it would be too cold for my laptop to handle (maybe around 10 degrees celsius, it had rained earlier that day and the deck we were on was still wet from it). I had my laptop plugged in and charging but the cord was on the still wet deck and the table I had it it on was a little wet too, although I tried the spot I put it on first. We watched for about three hours and the whole time my two friends were smoking cigars and a vapourizer and occasionally blowing the smoke around, sometimes at the screen. After we finished my laptop was a bit cold but it seemed fine. when I got home and opened up my laptop again the screen started flashing red. Sometimes the whole screen would go red (not like a blank red, but like a tinted red), sometimes just some horizontal lines would pop up and sometimes it would last for more than four seconds and it seems to be getting worse. I've tried shutting it off and letting it warm up but that didn't seem to help at all. I'm not sure if it's the cold that may have done this to my laptop or if it could've been the smoke/vapour, or a combination of both. does anyone know what to do or how I can fix it? Or do I need to take it in to get it fixed at a repair shop somewhere? Hopefully someone knows how to fix it. Sorry if it sounded like a lot of rambling, I just wanted to make sure anyone reading this would know everything that happened that may have been a factor in the problem. Thanks in advance.