Last night in Mohamed Mahmoud I sat on top of a wall to watch the battle between the police and protesters and after 5 minutes of watching skilful kids throwing back tear gas canisters at the police. We were showered with 4 or 5 simultaneously. Suddenly, I heard a hiss behind me, so I jumped and tried to remain low to avoid the smoke, behind a utility box to avoid anything falling on my head and closed my eyes so it didn't hurt. But then another one landed 5 meters on my side and another one in front of me. At this point I realised that I have to leave my position as the smoke was so heavy my chest was burning and breathing was quite difficult.
Fortunately, I managed to walk to the side street by the AUC library where I held the arm of a guy and told him to help me walk few meters away. I was spent and started to sweat all over (this meant more gas being absorbed by the body). He asked one of the motorbike ambulance to take me away. This was a great experience, the guys on the bike ran so fast that fresh cold wind blew in my face. Also, leaving the area saturated with smoke reassured me and I started recovering on the bike. Before reaching one of the field hospitals on a side walk I told him to drop me off as I felt much better and thanked them for the ride. My wheezy chest wasn't clear till 30 minutes later.
Earlier, I was in the field hospital in Omar Makram. I wanted to see as many cases with neurological problems as possible. There was a professor of Neurology there who I had an interesting discussion about the effects of the gas.
Most of the cases that came with convulsions weren't suffering from an epileptic fit.