Translation is based on a comment by the creator(Which seems to shorten stuff), mixed with what I can see in the Japanese text, it might not be 100% correct.
「Don't you know? Saliva has antibacterial properties.」「Silk... Don't take off my boots.」「But Lain... Your feet are really sweaty.」「And... you are licking them now.」「I... of course I know that...」「Which means, I can make them smell nicer by licking off all that sweat.」「Eh? Uh... thank you, I guess?」