"Some say" that wearing a mask may make some people touch their faces to adjust it.
Some don't have to say! Just take a look at people on TV or out and about if there are any mask wearers near you.
Mask on, pull it down at the front to talk, push it up again.
Wear it round your neck like a scarf, push it up when anyone comes near.
Pull it down by the front to answer the phone, put phone back in pocket, push mask up again.
No doubt get home, remove mask, probably wash hands (who knows what people do?), get phone out, make a few calls, cuddle the baby.
Etc, etc
Regards Margaret