Completely valid in extreme cases. It's usually good for consumers if limited warranties exclude preventable damage otherwise everyone is paying a higher averag

Completely valid in extreme cases. It's usually good for consumers if limited warranties exclude preventable damage otherwise everyone is paying a higher average cost per machine to cover warranty service for people who inflict their own liquid or physical damage. Extending that to smoke damage seems reasonable especially if the problem can be traced back to heat. Smoke particulates are incredibly fine and clingy -- they will fill every nook and crevasse of a carefully designed cooling system that doesn't have a big margin of error to start with. It's just a fact of life these days. If you want to smoke (and I do) you have to deal with the consequences.