I was exposed to the vapour from my works safety smoke cloak the other day ( a device that releases smoke when the buildings alarm is triggered by an intruder, the smoke is to reduce the intruders visabilty as it is so thick, however claims to be harmledd to humans). The initial exposure to the vapour had no effect on me, however an second exposure afew days later seemed to be the cause of a reaction the next day. I woke up the following morning with a puffy face, headache and wheezing but could not account for such symptoms. I have since released was I affected by the second exposure to the smoke cloak vapour?