[throwawayboise]

Do you think this was largely due to wearing a mask? Whether a mask would block a virus particle is debatable but even cheap masks are effective against larger particulates such as pollen, dust, dander, etc.

When I was a kid my neighbor always wore a mask while he was cutting his lawn. He had asthma that was pretty easily triggered and he said it made a big difference.

[philjohn]

That's a good question - I didn't actually start wearing a mask until a little later, when the mask mandate came into force in the UK. Our first lockdown was definitely pretty severe and there were much fewer cars on the road here, but that has gone away, so you could indeed be onto something.