Very interesting. Thanks for posting.
Tear gas exposure can cause a range of symptoms, including:
Eyes: Excessive tearing, burning, blurred vision, redness, inflammation, and spasmodic blinking
Nose: Runny nose, burning, and swelling
Mouth: Burning, irritation, difficulty swallowing, and drooling
Lungs: Chest tightness, coughing, choking sensation, wheezing, and shortness of breath
Skin: Burns, rash, redness, pain, and blistering
Other: Nausea, vomiting, panic, and agitation
Symptoms usually begin within 20–60 seconds of exposure. Most symptoms resolve within 30 minutes if the person can leave the area and clean off. However, prolonged exposure can lead to long-term eye and breathing problems.