Same answers as you already got on the other thread still apply today.
Worry more about chlamydia and STDs you do not have HepC once again to reiterate that fact. Again.
Wow! sounds like a heck of a kiss.
No worries with HCV. See a dentist ASAP
Forget about the HCV risk - not even worth stressing about, but it's likely you may have more of a problem with the rotten tooth - inflammation and infection. Now THAT'S something to be concerned about! Also makes kissing so much more enjoyable without the bad breath that often accompanies bad teeth. A trip to the dentist seems in order..........