Haha so long as you aren't puffing till it taste burnt the metal toxins chances are low. Why your aloud to open the package and test them before leaving if they taste burn you swap them out for a new one
As someone who has tried smoking it tastes HORRIBLE! Its why i vape. However if the cancer sticks actually tasted as good as a vape... well i digress...
sharing cigarette like that is artistically and romanticly pleasing