In the Military we all get Gas Chamber training in Boot Camp. The first time you encounter it you don't know what to expect. I also learned that I had to do it more than once.....in fact many more times. You see for troops trained in the field for CBR (Chemical, Biological and Nuclear) hazards, we had to go through it with all our MOPP (mission orientated protective posture) gear at least every 2 years as well as training in the field every year.
Many times I had gone through this training in the winter when I had a cold and or flu like symptoms and it worked miracles.
I thought about it this last week as I have been battling this cough and cold how I wish I could go through a gas chamber one more time, I know that sound extreme to some but (and maybe disturbing to others) but for about 15 minuets of distress and it would be over. I could have a cold shower clean off (never use hot water after doing this, another story) and feel 100% again. Trust me it works.