Read this:
https://www.mayoclinic.org/diseases-conditions/pneumonia/symptoms-causes/syc-20354204
Sure, I would agree that smoking increases ones risk for pneumonia but there are other risk factors as well. Interestingly in the early 1900s -1900 to 1919, cigarette smoking wasnt all that popular although cigar smoking was along with chewing tobacco and snuff. But that doesnt explain why that strain of influenza was so deadly.
A couple of years ago my nephew came down with the flu. Hes in his early 30s, he eats a very healthy diet, exercise regularly and doesnt smoke. Ironically I also contracted that same flu bug around the same time, we were both sick at Christmas, but it was one of those rare years that I hadnt gotten a flu shot. I wish I had gotten one.
My nephew after getting the flu, developed pneumonia and was laid low for several weeks, with two trips to the doctor and one to the ER and missed a lot of time at work as a result. I was then a 2 pack a day smoker, middle-aged and overweight and ate a terrible diet I got the same flu bug as my nephew but I didnt get pneumonia and recovered much quicker, only missed about 4 days of work which was still more than I wanted to miss. Go figure.
As to the rest of your post above, it is plain gibberish and truly ignorant.
It was that deadly because it could be? It was easily spread and acquired. There was no evolutionary benefit in mutating into a strain that was less lethal to its host.
Ah yes. The Spanish flu pandemic. 1918.
But would you not agree that sanitary hygiene and western civilization’s general understanding of how diseases can be controlled and even manipulated has come a long way since then?
If you are going to accuse me of posting plain gibberish and being truly ignorant you should include what it is I wrote that conflicts with your superior knowledge and understanding.