Disposable vapes, such as Air Bars Vapes and Elf Bar Lost Mary OS5000, are legal in the USA for individuals who are of legal smoking age. However, it's important to note that the legality of vaping can vary by state and local laws, so it's essential to check the regulations in your area before purchasing and using disposable vapes.

The US Food and Drug Administration (FDA) regulates the manufacturing and marketing of all tobacco products, including e-cigarettes and disposable vapes. As part of their regulations, the FDA has banned the sale of flavored e-cigarettes and disposable vapes in convenience stores and gas stations. However, they are still available for purchase in dedicated vape shops and online stores.

It's also important to note that some states have enacted stricter regulations on vaping products, including disposable vapes. For example, in some states, flavored e-cigarettes and disposable vapes have been banned altogether. Additionally, some states require a specific license or permit to sell vaping products.

Before purchasing and using disposable vapes, it's essential to do your research and be aware of the regulations in your area. You can check with your state and local government websites or contact your local vape shop for more information. Furthermore, it's always essential to follow the instructions and warnings on the product packaging to ensure safe and responsible use.

In conclusion, disposable vapes such as Air Bars and Lost Mary OS5000 are legal in the USA for individuals who are of legal smoking age. However, it's crucial to be aware of the regulations in your area and to follow the instructions and warnings on the product packaging for safe and responsible use.