The does makes the poison. I've worked around a chemist who had a hook for a hand. She blew her hand off with sodium azide powder. I'd never want to be around a bottle with 50 g of it in powder. However, a bit of azide to keep microbial growth down in a 1 mL solution is not a big deal. But yes, caution is cheap and there is no reason to take the risk. Use PPE.
The does makes the poison. I've worked around a chemist who had a hook for a hand. She blew her hand off with sodium azide powder. I'd never want to be around a bottle with 50 g of it in powder. However, a bit of azide to keep microbial growth down in a 1 mL solution is not a big deal. But yes, caution is cheap and there is no reason to take the risk. Use PPE.