The permissibility of carrying aerosols on planes is subject to the policies of the airline and the type of aerosol. Aerosols that are classified as hazardous materials or are forbidden by the airline or TSA cannot be brought on board. Such aerosols may contain flammable, toxic, or corrosive substances. However, some aerosols may be permitted with certain restrictions, such as limitations on the quantity and packaging requirements. To ensure compliance with relevant regulations and determine whether the aerosol is allowed on the plane, it is advisable to verify the airline's and TSA's rules and regulations in advance.