Lefties evade, it's what they do. The answer to the opening post is politically inconvenient for lefties, so the next step is to cheat or scam. Evading is cheating. Go on now, post your next evasion...
It's not evading. I don't know what you do, but it's sort of like asking what screw driver you bring to fix a furnace. The answer depends on the nature of the problem.
Some things are spread by droplet. Some are spread by aerosol. Some are extensively spread by contact. Some are spread by contact with bodily fluids. Some are highly contagious with a low inoculation dose, some are much higher.
The answer depends. If this is a conversation about COVID, the answer is an N95 mask with face mask and contact precautions. If it's someone with influenza, I just wear a surgical mask.