Since it is now clear that a major mechanism of dispersal of the COVID virus is through aerosols - fine mists in the air similar in scale to smoke particles - the CDC has finally recommended that we should all be wearing masks equipped with filters that are able to block such particles.

However there seems to be little emphasis on ensuring that whatever masks we wear are worn in a way that prevents leakage around them. If your mask is leaking, you are allowing air to reach your respiratory system that does not pass through the mask filter. And when you exhale, you are expelling air into your environment that is not passing through the mask, either.

In my opinion, most of the masks being sold and worn today are not up to the task - they are simply not able to seal properly against the face - and that means the mask cannot really do its job.

So in the video below I’ve reviewed three masks that I have tried recently and explained the importance of having a mask that has the proper filters, and seals well enough against the face so that all of the air you inhale and exhale is filtered.

Here are links to the masks I refer to in the video:

Envomask

Available from the Envomask Web site. Price: ~USD $70-80.

Dentec

Dentec USA Web site. Available from their US distributors such as Critical Tools. Price: ~USD $23-40

GVS

GVS SPR644 ELIPSE P100 on amazon.com. Price: ~USD $28