Originally Posted by Ujest Shurly
Can those cans filter 0.3 micron sized particles or are they filled with activated charcoal for dealing with vapours?
Easy fix... I just put some Saran Wrap under the caps. It's a sure-fire way to avoid the virus.

You never change things by fighting the existing reality.
To change something, build a new model that makes the old model obsolete.
R. Buckminster Fuller