Wouldn't get less particles of virus better than getting more? Let's say I cough at you. 33% go to your eyes, 33% go to your nose, and 33% go to your mouth. A

Wouldn't get less particles of virus better than getting more? Let's say I cough at you. 33% go to your eyes, 33% go to your nose, and 33% go to your mouth. Are you saying that getting 33% is the same as getting 100%? I'm fairly certain that your immune system works better if you are exposed to less amount of virus. This is true for bacteria and toxin as well. Every measure reduces risk/amount. Nothing can guarantee 100% that you won't get covid. But you do want to keep reducing risk.