I have not experienced this issue, but it may depend on the kind of air fryer you are using. The smoke is caused by the excess grease that drips to the bottom of the air fryer, so placing a piece of bread underneath the basket will absorb it and can help reduce the smoke. If you have a lot of grease after the first batch, it’s a good idea to drain it off before you cook the next batch. Don’t pour it down the sink, though. You should collect it in a jar or other safe container. I have also lined the basket with a paper towel to soak up the grease and that helps too!