Researchers from the University of Houston, in collaboration with others, have designed a “catch and kill” air filter that can trap the virus responsible for COVID-19, killing it instantly.
Zhifeng Ren, director of the Texas Center for Superconductivity at UH, collaborated with Monzer Hourani, CEO of Medistar, a Houston-based medical real estate development firm, and other researchers to design the filter, which is described in a paper published in Materials Today Physics.
That would be a must for air, train, bus transporation 
How soon before its proven full proof for worldwide manufacture I wonder.
If it is airborne? Some scientists finding Covid19 in genetic materials in sewage from 2019- Spain, Italy and Oxford
A great help to have in all those Closed places with Air conditioning. Hope it is positive and put in place ASAP. X
Some British coach companies have already put new air conditioning in their coaches.
I believe HEPA filters kill 99.5% of bacteria, virus and pollen and are fitted in aircraft, is this not simular?
HEPA filters, are just ultra fine filters, they can trap a virus but do not kill it. Someone has to change the filters and contamination can be a result as live virii can still be on them.
The air that I breath.
Aerosol can air fresheners
Can we please turn the temp down.
