Aerosols fall into the category of liquids and therefore cannot exceed 100 ml (maximum container capacity). Aerosols containing higher amounts must go in checked baggage, and it is advisable to make sure that the container is tightly closed and protected so that the button is not pressed during the flight.

Traveling with aerosol cans requires strict adherence to TSA and international aviation safety regulations because they are pressurized containers. In carry-on luggage, aerosols are subject to the "3-1-1" rule: they must be in containers of 3.4 ounces (100ml) or less and fit inside a single quart-sized clear plastic bag. These are typically limited to "personal care" items like hairspray, deodorant, or shaving cream. In checked baggage, you are permitted to pack larger aerosol cans, but they must be protected by a cap or other suitable means to prevent accidental release of the contents. There are strict quantity limits for checked aerosols: the total aggregate quantity per person cannot exceed 2 kg (70 oz) or 2 L (68 fl oz), and each individual container cannot exceed 0.5 kg (18 oz) or 500 ml (17 fl oz). It is crucial to note that "hazardous" aerosols, such as spray paint, WD-40, or self-defense sprays like mace, are strictly prohibited in both carry-on and checked luggage. To ensure safety, always double-check that the nozzle is securely covered to avoid leakage caused by the shifting pressure of the aircraft's cargo hold during the flight.