The term 'Barbecue Byproduct' can be broken down into two crossword solutions, 'SMOKE' and 'AROMA'. SMOKE is a byproduct of barbecuing, which is the cooking of food over an open flame or hot coals. The SMOKE produced from barbecuing adds flavor to the food and gives it a unique smoky AROMA. AROMA is another byproduct of barbecuing, which is the smell that is produced from the SMOKE. This smell is often associated with barbecued food and is one of the main reasons why people enjoy barbecuing.