[wayner123]

Originally Posted by oooo35980

I read somewhere to exhale 80-90% of the smoke then start the retrohale, unfortunately it isn't an exact science, sometimes I get out of it with a mild sinus irritation, sometimes my eyes tear up, and sometimes it feels like an m-80 just went off in my head. Either way it isn't pleasant, tolerable most of the time, but never pleasant.

You should read that third link I posted and give it a try.