blitzs

So, I have some duralumin laying around and I decided to use it for the base of my forge (where the charcoal where be placed on). But I heard people say that aluminium releases toxic gases, is it safe to use duralumin, or should I change to something else? I also know that aluminium has a relatively low melting point compared to other metals, do you think that it would be able to withstand the heat? 

Thank you all for the replies, I have another question, how about aluminium? I am also making a brand new forge and I am planning to use Duralumin as the base for the charcoal, I heard people say that aluminium also releases toxic gases, is it safe to use duralumin, or should I change to something else?

I have just started to forge, and I have a question about metals. Can someone please tell me which metals are toxic when burnt and metals that are safe? I know galvanized metals are toxic but how do you identify them?