AHHHCHOOOO

I had no idea that there is a best way to blow your nose.  Did you?
Step 1.  Blow gently one nostril at a time.
Step 2.  Do not hold both nostrils tightly while you blow.
Step 3.  Do not blow your nose forcefully as this jams nasal secretions into the sinus cavities, which can cause a sinus infection.
Step 4.  Use a tissue not a sleeve.  (I added that one)