Let's say while people are burning chametz, (this is a public burning area where many people come to burn the chametz in a big pile) someone puts a grill over the smoke and puts a king salmon on the grill. Can he eat the salmon on Pesach or is the smoke considered chametz?
My assumptions: The smoke itself is not food. Also, when the person puts the grill on, the chametz stuff appears charred and pulverized to the point where no trace of its origin can be recognized. I.e., it's most likely unedible, but, of course, perhaps way down in the charred pile, maybe something didn't burn completely.
If it is chametz, explain why it is since the smoke itself is not an edible substance. Does chametz transfer in the air? (If it did, wouldn't smelling someone's exhaled breath be chametz?)