Smoke damage

So I bought new ram sticks and a psu. From 2x8 to 2x16 and from 650w corsair to 750w bequiet! Installed them imo correctly. Little thing to note was that its -16c here and the parts were cold. I let them sit for about an hour next to a heater and then installation took about an hour. Anyways...

Hi, Its my first pc build. After all the wires and rechecking for hours. I turned on the pc and there was light, small lightning and one of the case fan blew out and smoke was coming out. Then, my power chord went out. I am afraid as I don't know what happened here or what is the cause of...

Someone blew hookah smoke straight into the fan of my pc. I have a watercooling system in front. The hookah smoke smelled really sweet so is it able to do damage after a full exhale of smoke into my pc straight into the watercooling system (and the internal components)? I thought it may create a...