No response to why Baking Soda fights fungus, so I will give my reason to  
use it for sinus flushes. DR Tulio Simoncini? on the TV show Know The Cause 
made  a white colored colon tumor shrink and turn into a pink colon after 5 
Baking  Soda soaks. This was shown on his show. He says the white tumor was 
a fungus,  some say it was the big C. He treats the big C with Baking Soda 
in his clinic in  Italy, with good results. One of my Christmas tree 
customers had fungus in her  sinus that destroyed her jaw bone. It can be a 
real 
problem so I use anything  that even might control my sinus fungus problem.
 
If you use pine needles for tea make sure that the needles were not painted 
 or sprayed. Pine trees also are noted for having fungus problems and are  
supposed to get weekly sprayings of a fungicide during their growing season. 
 
I treated my rose bushes which had fungus on their leafs with Baking Soda  
mixed in water. It made the fungus go dormant so the new leafs looked OK. 
The  spray only helps the new growth. I saw how Baking Soda helps with fungus 
on  roses.
Brickey