John Theune wrote:

I may be perpetuating a OWT but I seem to recall something about carb
heat putting unfiltered air into the carb and that was why it was not
always on in addition to the issue of the hotter air decreasing performance.

If you are flying who cares? Unless you are in a sandstorm or
volcanic ash downfall area my ASSUMPTION is that unfiltered air in
flight is not a hazard for the engine.

Ron Lee