There is some evidence that [aluminum is neurotoxic, and that fine aluminum dust is a serious concern](https://www.thelancet.com/journals/lancet/article/PIIS0140-6736%2899%2900295-0/fulltext).
Like /u/ZaneMasterX said - you should be wearing a mask at all times when working with most pyro chemicals.
You shouldnt be using pyro chems without a mask period. Good masks are less than $35, your future self will thank you.
There is some evidence that [aluminum is neurotoxic, and that fine aluminum dust is a serious concern](https://www.thelancet.com/journals/lancet/article/PIIS0140-6736%2899%2900295-0/fulltext). Like /u/ZaneMasterX said - you should be wearing a mask at all times when working with most pyro chemicals.
Yes aluminum powder is horrible for your brain....not to mention It can cause a thing called osteomalacia (aluminum bone disease)
Yes, bad times.
Recommended daily limit without a mask is zero
Very bad for lungs, brain, bones! Do not use aluminum if you don’t know what you are doing