An offshoot of this question.
It is some people's practice to kiss their tzitzit during davening. When one wears a mask, one is really kissing the interior of the mask. Should one still bring the tzitzit to his lips or is there no value if he does not pull down the mask?
BTW, I spoke to my LOR who said he doesn't know the answer and so he holds his tzitzit and gives a squeeze in his hand to remind himself, so that the holding performs the same function as kissing, but he has no idea if this is right.