There was speculation on if it was Sarin or something else but it’s still a side tract getting off topic of who did it. People will still be suspicious because first responders werent protected with skin exposed especially when they didn’t even know what it was yet. It affects the nervous system and interferes with nerves like Vegas nerve which runs straight up and down for instance from throat to bottom that can affect heart rate and damage can cause loss of control of bladder, bowels and affect the heart rate. Vagus nerve stimulation is sometimes used in emergencies like tack like racing heart rate or on other end to be aware of dangers from strangulation which can cause it like meconium aspiration due to loss of control of bowel in a infant with cord strangulation during a say delayed birth or induced labor complication which can collaps babys lungs if not quickly aspirated from mouth or throat prior to taking a breath so knowing what it can cause.
Anyways fact issome kind of chemical passed their way and needs to be traced to the culprit and dealt with.