It is supposed to have been used for centuries. Organic Selenium might lower the effects of Aluminum, poisonous heavy metals and other poisons in our body. Consider a good diet to detoxify yourself. The Muslims regular and voluntary fasting is good also when it comes to detoxifying the body. Aluminum normally does not make a person sick at once.
Different persons react differently.
For the average person it can take 10-20 years or more if the person does not do anything about it. Even if we get symptoms from Aluminum later in life it might be impossible to know the exact reasons for our symptoms. Our goal must be to minimize all kinds of poisons since it can be too difficult to eliminate poisons totally. Especially when we travel or visit others. You are to guard against them.