If you are using homemade Aloe Vera gel, a bad smell is the first sign that your Aloe Vera has gone bad. Additionally, the homemade gel will lose its moisturizing and hydrating aura.
Most store-bought Aloe Vera won’t have significant changes after expiration. For this reason, checking the expiration date is the most ideal way to determine whether the product has already gone bad. The expiration date should be available on the product’s package.