What you are talking about is not quarantine, it’s precautions..
I currently do similar things during a flu outbreak..
I cancel any doctor or dentist appointments. I avoid closed or clouded public spaces..
When I got to a public place, like the grocery for example, I go armed with a anti-microbial, like alcohol.. I consciously avoid touching my eyes, or nose with my hands until I wash them. I also look for sick people..
It’s not hard to do..
crowded....lol....clouds have little to do with it..
I understand the technical meaning of the word, I was just using the language of the OP, “self-quarantine”. When I said I would self-quarantine I meant more than what you are saying, I mean literally shelter in place, no contact with anyone.