For me the symptoms are very easy to detect, I can't breath!!! I am asmatic, been all my life. When I get an allergic reaction my chest tightens up and it gets very hard to breath. I do use CA but I have a ceiling fan just behind my head. I turn it on and glue away. I however can only go for a while before the burning eyes and raw throat come and I have to stop. I am going to try to get away from CA. I bought some Gorilla Glue which is a urathane based glue. I will try that on my next build. I also got some good old Elmers aliphatic resin glue also. Just be aware of your body when using CA. Any change in the way you feeel should be an indicator to take a break. I am very sensative to changes in my body after all these years. So I can work with CA easily. Jusy not as long as I would like. Anyhow sorry for the ramble. Just be watchful of your condition and all will be well.

Mark Shuman