[IYAAYAS]

Pneumonia is a very strange thing. I had double pneumonia while I was in the AF and didn't even know it. People in my career field were under orders to see a doctor at the slightist sign of illness, I felt a little sick and saw the doctor. During the part where they listen to you breath he heard something and sent me for x-rays. I had double pneumonia but felt like I had a very light cold. I was given 10 days sick leave and antibiotics. I spent 10 days at home and never really felt sick.

[IYAAYAS]

That sounds ominous, I wasn't experimented on or anything.
I was remodeling a 150 yo house at the time, tearing down a lot of walls full of old mouse nests, stiring up dust etc.. Not an uncommon way to get pneumonia I've been told. ALWAYS wear a dust mask!
The type where you don't get sick is sometimes refered to as walking pneumonia, which is what I had.

[riri]

Right. I think that sort of pneumonia is bacterial or fungal. Treatable with antibiotics. My brother in law, who lost a spleen, would get walking pneumonia from the cold every winter. Until he left the northeast.

It can be brought on by a number of different irritants--dust, chemicals, cold air, etc.

Viral pneumonia, I believe, is much more serious.