Every time you breath Air into your lungs, you then exhale it. So, particles from other people are entering into you. And How many Particles from other People enter you? How many Particles frim other people?
From Saudi Arabia?
From Your Country?
We breath each other. Yes, we do. Particles of you are in me and particles of me are in you. It’s unavoidable. It’s the Air traveling all over the World carrying particles of each of us to one another.