[packrat01]

As long as you'll be sealed in a room; why not have one of those HEPA room-sized air filters running? They're recirculating, so won't pull in anything from outside.

Filter size depends on make and model. Many have a cleanable "pre-screen" that one could spray a neutralizing agent on, for added benefit.

Vinegar is a relatively good germ-killer. Peroxide?

[harpseal]

Those of us who dive and have charged air tanks or those of us who have medical oxygen in the home may also provide for positive air pressure in our shelter room.

Stay well - Stay safe - Stay armed - Yorktown