[M T]

I always think it is funny when I see someone in a car, by themselves, wearing a mask.  I mean, good for them, but it's probably unnecessary.

Wouldn't you be one of the first to say that adjusting a mask is when you'll be more likely to contaminate yourself?  Whether you touch the front of the mask with your hand (and then later, hand to face) as you take it off or put it back on or set it aside for the time you're in the car.

Personally, I see less risk at putting a clean mask on at home before going out to run errands and not taking it off until home again when one can easily clean up.

I recently watched a congressional hearing on C-SPAN. The person running the hearing was a well-known politician, age 70+.  As she was opening the meeting, she wore a surgical mask and latex gloves.  As she spoke, the mask slowly slipped down, eventually exposing her nostrils.  As it continued to slip, I'm sure it was distracting her.  So she grabbed the front of the mask about where her lips were, and pulled it forward and down to her neck.  She wasn't on camera much during about 5 minutes of testimony.  But when she again was center stage and talking, she absent-mindedly reached up and rubbed her cheek to the right of her nose with her (still gloved) hand.

I remember in March, this one guy put a youtube video on how to decontaminate groceries where he basically used aseptic technique, with a "dirty zone" and a "clean zone" and really thorough cleaning with dilute bleach, and proper disposal and cleaning of anything that had been in the "dirty zone".  At the time it seemed like an overkill, but I remember wondering whether maybe it wasn't, if fomite transmission was common and easy.

Your Overkill May Vary.  Just as everyone engages in some risky behavior all the time (seriously, did you always wash your hands as frequently as you did in March & April?), we will all wind up choosing what activities we do or don't do that impact our risk.   As I am at high (~ 20%) risk of death from symptomatic COVID-19, I choose to reduce my risk of becoming infected.  In my household, every frozen food exterior box that comes from the grocery store goes into our recycle bin while the inside container goes into the freezer.  Every item that goes into the refrigerator is thoroughly cleaned.  Everything else is set aside long enough for any SARS-CoV-2 to inactivate by 6 orders of magnitude.

[M T]

I always think it is funny when I see someone in a car, by themselves, wearing a mask.  I mean, good for them, but it's probably unnecessary.

Wouldn't you be one of the first to say that adjusting a mask is when you'll be more likely to contaminate yourself?  Whether you touch the front of the mask with your hand (and then later, hand to face) as you take it off or put it back on or set it aside for the time you're in the car.

Personally, I see less risk at putting a clean mask on at home before going out to run errands and not taking it off until home again when one can easily clean up.

I recently watched a congressional hearing on C-SPAN. The person running the hearing was a well-known politician, age 70+.  As she was opening the meeting, she wore a surgical mask and latex gloves.  As she spoke, the mask slowly slipped down, eventually exposing her nostrils.  As it continued to slip, I'm sure it was distracting her.  So she grabbed the front of the mask about where her lips were, and pulled it forward and down to her neck.  She wasn't on camera much during about 5 minutes of testimony.  But when she again was center stage and talking, she absent-mindedly reached up and rubbed her cheek to the right of her nose with her (still gloved) hand.

I remember in March, this one guy put a youtube video on how to decontaminate groceries where he basically used aseptic technique, with a "dirty zone" and a "clean zone" and really thorough cleaning with dilute bleach, and proper disposal and cleaning of anything that had been in the "dirty zone".  At the time it seemed like an overkill, but I remember wondering whether maybe it wasn't, if fomite transmission was common and easy.

Your Overkill May Vary.  Just as everyone engages in some risky behavior all the time (seriously, did you always wash your hands as frequently as you did in March & April?), we will all wind up choosing what activities we do or don't do that impact our risk.   As I am at high (~ 20%) risk of death from symptomatic COVID-19, I choose to reduce my risk of becoming infected.  In my household, every frozen food exterior box that comes from the grocery store goes into our recycle bin while the inside container goes into the freezer.  Every item that goes into the refrigerator is thoroughly cleaned.  Everything else is set aside long enough for any SARS-CoV-2 to inactivate by 6 orders of magnitude.