I personally think there is a significant risk increase through kissing compared to just breathing the same air.
I personally will think twice about kissing someone that is of the opinion that it is all BS and refuses to wear masks when out and about in town. They are a bigger risk than the guy that stays home as much as he can and always keeps his mask on outside of his own personal space.
Same goes for if someone tells me they been at a big gathering (party ect in last week or two) they might have contracted it and not know it yet.
And due to the nature of this industry people don't share things like... "Oh I went to a big wedding last Saturday* or " I was hitting it up in the club last night it was banging and the dance floor was packed" We don't know if they wear masks when out and about. And no one goes around asking people 20 questions about where they been to determine their risk level.
So we really don't know how much of a risk a client is when he pitches at our door therefore a lot of ladies choose not to kiss to minimise the risk even if it is just by a small percentage it still is her choice to do kiss or not. Just like it is a clients choice to kiss or not. Everyone has their own risk budget and will act accordingly.
www.bustle.com/wellness/kiss-safely-covid-19-pandemic