I got my hands on NaCN. Was preparing for SN as alternatives. But this was earlier this year and I bailed out from my plan. My best friends disposed my NaCN stock. I did have it around me for a good while in a non well ventilated area, and by minutes I can feel the shortness of breath just by inhaling them. I didn't directly consume them altho I had small amount on my hands but I wash my hands shortly after. Bit dizzy for few hours but nothing lingers longer. I purchased mine online, they packed it really tightly with layers of papers, bubble wraps, and tapes. I carried it around in my bag, going to public places and had my bag scans, it never arouse suspicion. Would like to know more in-depth study around NaCN if any.