Re: Aluminum foil for smoking - your preferences.
I don't think there are chemicals that can be released through heating.
bare in mind that people regular use foil to cook meat and other dishes.
I don't think there is going to be a problem with the foil betwixt foil & tobacco.
I am also led to believe that in other countries water purification is used using aluminum. Without any link to any blood disease or increased melts in blood.
I would not worry!