My father asks, can smoke in the air from wild fires cause a fuel injected engine to choke?
(He seems to think this was once true for carbureted engines - was it?)
My personal guess is that we can look at how car engines (still) work on rainy days and at emissions technology like EGR and reason by analogy: a very thick cloud of smoke might somewhat lower the combustion temperature, but not enough to stall the engine, although it might make the emissions or MPG worse. Heated intake air might lower the volumetric efficiency by a small amount, maybe similar to high altitude (and opposite to the effect of a rainy day increasing VE). And particulate matter might clog the air filter, but it would take a long time.
I wouldn't expect a density of smoke that does not already kill the driver to have much effect on either carbureted or FI cars, but perhaps if there is a difference maybe more modern fuel injected could sense and lower EGR to compensate for there already being smoke in the chamber and could lower fuel air ratio to compensate for the hot/dry air.