They exist, I have no idea if they work. Here is an examplefor reference without endorsement or anything as I’ve never used it.
https://www.youtube.com/watch?v=3kauwZbqWFo
Video at link
Acyn Torabi
@Acyn
Tom Cotton reiterates his suggestion that the Coronavirus originated at a super-lab in Wuhan
https://twitter.com/Acyn/status/1229069649129508864
They kill “germs.”
I guess I would wonder what “germs” they are talking about.