Bubblegum flavor is a combination of fruity flavors, often including strawberry, banana, cherry, and other generic berry, pineapple, or even cinnamon flavors, depending on the brand. The flavor is created using artificial flavors called esters, which replicate the smell of fruits. These esters may include methyl salicylate, ethyl butyrate, benzyl acetate, amyl acetate, or cinnamic aldehyde. The exact recipe for bubblegum flavor varies from company to company, but it generally consists of a mix of chemicals that smell like fruit, resulting in the familiar sweet and fruity taste associated with bubblegum.
In summary, bubblegum flavor is a unique combination of fruity flavors created using artificial esters, and the specific blend of flavors can vary between different brands and products.