Myth: Some wasp sprays can be substituted for pepper spray. However, wasp sprays do not have the same stopping power on humans as pepper spray. Myth: Some people are immune to pepper spray. According to a 2001 study and testing done by pepper spray manufacturer SABRE, no one is immune as some pepper sprays had failed due to not having consistent strength levels. SABRE tests every batch to ensure consistent heat levels. Myth: There are certain restrictions on traveling with pepper spray by air or differences in state laws, so it is important to check regulations, but the FAA does allow one 4-ounce container in checked baggage and pepper spray is legal to carry