If odors are tiny particles of what you’re smelling, can they infect?

Question

If odors are tiny particles of what you’re smelling, can they infect?

In: Chemistry

Answer 1

The particles that you smell are for the most part molecules. Molecules are significantly smaller than anything that you can be infected with. So smells don’t tend to be able to infect you, although they can indicate the presence of things that can infect you.