Thread by @joeyfox85

When we go back to the office, small personal HEPA filters are an additional mitigation measure you can use.

You won't have control over the entire environment and there might be COVID containing aerosols circulating in the room, but...

1/5

You aren't breathing in the air from the whole room. You are breathing in the air next to your face. If you can ensure that the air in your immediate vicinity is clean, you won't be breathing in virus particles.

2/5

You can purchase a small HEPA filter, but it's important to keep it close to you. Just like short range transmission can occur in a room with good ventilation, short range mitigation can work in a room with poor ventilation.

3/5

This can be used in many locations including restaurants, movie theaters, sporting events, waiting rooms...

It's an additional layer of mitigation, not a guarantee against transmission.

4/5

There is no concern about these "bringing the virus closer to you". They will be bringing in mixed air from the room which you'd be breathing in anyway. They will ensure there is a lower virus concentration in your immediate vicinity.

5/5

Lots of people asking for an example. There are plenty of models. I have this one:

canadiantire.ca/en/pdp/noma-pe…

To be portable, it needs a power bank like this: bestbuy.ca/en-ca/product/…